Archival Resources in Wisconsin: Descriptive Finding Aids

Container	Title
	Series: 4. Inspection and Repair of Bridges and Culverts, 1891-1986
Box 16 Folder 4	Bridge 75, 75A, 75C, and 75D, Kirkland, IL, 1922-1931
Box 16 Folder 5-6	Bridge 201½, Cedar Rapids, IA, drawings only, 1900-1954
Box 16 Folder 7	Bridge 227, Manhattan, IL, 1925-1945
Box 16 Folder 8	Bridge 228, Manhattan, IL, 1933-1973
Box 16 Folder 9	Bridge 280, 281, and 282, Delmar, IL, 1925-1951
Box 16 Folder 10	Bridge A-314, 1906
Box 16 Folder 11	Bridge A-316½, 1942-1950
Box 17 Folder 1	Bridge AA-66, Walker, SD, with photographs and negatives, 1927-1977
Box 17 Folder 2	Bridge AA-767, Miles City, MT, 1953
Box 17 Folder 3-4	Bridge BB-2, Miles City, MT, with photographs and negatives, 1922-1975
Box 17 Folder 5	Bridge BB-4, Miles City, MT, with photographs, 1929-1953
Box 17 Folder 6	Bridge BB-4 and BB-6, Miles City, MT, 1925-1953
Box 17 Folder 7	Culvert BB-5, Fort Keogh, MT, 1939
Box 17 Folder 8	Bridge BB-6, Miles City, MT, 1925
Box 17 Folder 9	Culvert BB-7½, Paragon, MT, 1932-1936
Box 17 Folder 10	Culvert BB-7¼, Paragon, MT, 1947-1948
Box 17 Folder 11	Culvert BB-7⅔, Paragon, MT, 1932
Box 17 Folder 12	Culvert BB-7¾, Paragon, MT, 1932
Box 17 Folder 13	Culvert BB-7⅘, Paragon, MT, 1933
Box 17 Folder 14	Culvert BB-7⅚, Paragon, MT, 1932
Box 17 Folder 15	Culvert BB-7 6/7, Paragon, MT, 1932
Box 17 Folder 16	Culvert BB-7 11/12, Paragon, MT, 1937
Box 17 Folder 17	Bridge BB-8, Miles City, MT, 1948-1952
Box 18 Folder 1-2	Bridge BB-8, Miles City, MT, with photographs and negatives, 1922-1976
Box 56 Folder 1-3	Bridge BB-8, Miles City, MT, 1922-1976
Box 56 Folder 4	Bridge BB-10, Paragon, MT, with photographs, 1938-1947
Box 56 Folder 5	Bridge BB-10½, Paragon, MT, with photographs and negatives, 1939-1958
Box 56 Folder 6	Bridge BB-10⅔, Paragon, MT, 1943-1965
Box 56 Folder 7	Bridge BB-10¾, Paragon, MT, 1945-1950
Box 56 Folder 8	Bridge BB-10⅘, Paragon, MT, with photographs and negatives, 1950-1952
Box 56 Folder 9	Bridge BB-12, Paragon, MT, 1927-1953
Box 57 Folder 1	Bridge BB-12½, Paragon, MT, 1941-1969
Box 57 Folder 2	Culvert BB-14, Paragon, MT, 1931
Box 57 Folder 3	Culvert BB-14½, Paragon, MT, 1943-1948
Box 57 Folder 4	Bridge BB-16, Paragon, MT, with photographs and negatives, 1912-1968
Box 57 Folder 5	Bridge BB-18, Sheffield, MT, 1930-1971
Box 57 Folder 6	Bridge BB-20, Sheffield, MT, 1933-1955
Box 57 Folder 7	Culvert BB-21, Sheffield, MT, 1918-1954
Box 57 Folder 8	Bridge BB-22, Sheffield, MT, 1932-1957
Box 57 Folder 9	Bridge BB-22½, Sheffield, MT, 1933-1939
Box 58 Folder 1	Bridge BB-24, Sheffield, MT, with photographs and negatives, 1938-1971
Box 58 Folder 2	Bridge BB-26, Thurlow, MT, 1929-1930
Box 58 Folder 3	Bridge BB-28, Carterville, MT, with photographs and negatives, including some of Culvert BB-111½, 1935-1957
Box 58 Folder 4	Bridge BB-30, Orinoco, MT, with photographs, 1912-1958
Box 59 Folder 1	Bridge BB-32, Orinoco, MT, 1935-1971
Box 59 Folder 2	Culvert BB-33¼, Sheffield, MT, with photographs and negatives, 1929-1942
Box 59 Folder 3	Culvert BB-33⅜, Lock Bluff, MT, 1937-1944
Box 59 Folder 4	Bridge BB-34, Orinoco, MT, 1913-1971
Box 59 Folder 5	Bridge BB-36, Forsyth, MT, 1910-1961
Box 59 Folder 6	Bridge BB-38, Forsyth, MT, with photographs and negatives, 1911-1978
Box 60 Folder 1-3	Bridge BB-38, Forsyth, MT, with photographs, 1911-1978
Box 60 Folder 4	Bridge BB-38½, Forsyth, MT, 1954-1964
Box 60 Folder 5	Culvert BB-39, Lock Bluff, MT with photograph of old surface mine pocket condition, 1949-1953
Box 60 Folder 6-7	Bridge BB-40, Forsyth, MT, with photographs and negatives, 1938-1970
Box 60 Folder 8-9	Bridge BB-42, Cold Springs, MT, 1925-1977
Box 61 Folder 1	Culvert BB-43⅔, Thurlow, MT, with photographs and negatives, 1939
Box 61 Folder 2	Culvert BB-43⅘, Calabar, MT, 1921
Box 61 Folder 3	Culvert BB-43⅚, Thurlow, MT, with photographs and negatives of rail, 1950-1953
Box 61 Folder 4	Bridge BB-44, Cold Springs, MT, 1945-1958
Box 61 Folder 5-6	Bridge BB-45, Sheffield, MT, 1931-1952
Box 61 Folder 7	Culvert BB-45½, Thurlow, MT, 1939-1946
Box 61 Folder 8	Culvert BB-45¾, Thurlow, MT, 1935-1948
Box 61 Folder 9	Bridge BB-46, Cold Springs, MT, 1936, 1959
Box 61 Folder 10-11	Bridge BB-46¼ and BB-46½, Forsyth and Cold Springs, MT, 1915-1972
Box 61 Folder 12	Culvert BB-46⅛, Cold Springs, MT, 1935
Box 61 Folder 13	Bridge BB-47½, Thurlow, MT, 1919-1953
Box 61 Folder 14	Culvert BB-47¼, Thurlow, MT, 1940-1941
Box 61 Folder 15	Bridge HBB-47⅛, Thurlow, MT, 1942
Box 61 Folder 16-17	Bridge BB-48, Cold Springs, MT, with photographs, 1913-1953
Box 61 Folder 18	Culvert BB-50, Malaga, MT, 1915-1954
Box 61 Folder 19	Bridge BB-54, Antwerp, MT, 1933-1954
Box 23 Folder 1	Culvert BB-55, Thurlow, MT, 1921-1957
Box 23 Folder 2	Culvert BB-55½, Thurlow, MT, 1915-1938
Box 23 Folder 3	Bridge BB-56, Antwerp, MT, 1914-1951
Box 23 Folder 4	Culvert BB-57½, Thurlow, MT, 1923-1943
Box 23 Folder 5	Bridge BB-58, Antwerp, MT, 1924-1937
Box 23 Folder 6-7	Bridge BB-60, Antwerp, MT, with photographs and negatives, 1935-1949
Box 23 Folder 8	Culvert BB-61½, Cartersville, MT, with photographs and negatives, 1927-1941
Box 23 Folder 9	Culvert BB-61⅔, Thurlow, MT, 1932
Box 23 Folder 10	Bridge BB-62, Antwerp, MT, 1925-1947
Box 23 Folder 11	Bridge BB-64, Antwerp, MT, 1935-1957
Box 23 Folder 12-13	Bridge BB-66, Antwerp, MT, with photographs and negatives, 1923-1971
Box 62 Folder 1	Bridge BB-66, Antwerp, MT, 1923-1971
Box 62 Folder 2	Culvert BB-67, Carterville, MT, 1929-1949
Box 62 Folder 3	Bridge BB-68, Antwerp, MT, with photographs and negatives, 1913-1958
Box 62 Folder 4	Culvert BB-69, Bower's Spur, MT, 1941-1955
Box 62 Folder 5-6	Bridge BB-70, Antwerp, MT, with photographs and negatives, 1912-1971
Box 62 Folder 7-8	Bridge BB-72, Vananda, MT, with photographs and negatives, 1914-1971
Box 62 Folder 9	Bridge BB-73¾, Carterville, MT, 1939-1956
Box 62 Folder 10-11	Bridge BB-74, Vananda, MT, 1915-1955
Box 63 Folder 1-2	Bridge BB-76, Ahles, MT, 1914-1956
Box 63 Folder 3	Bridge BB-77, Carterville, MT, 1919-1941
Box 63 Folder 4	Bridge BB-77½, Cartersville, MT, 1929-1969
Box 63 Folder 5	Bridge BB-78, Vananda, MT, with photographs and negatives, 1914-1944
Box 63 Folder 6	Culvert BB-79, Carterville, MT, with photographs of concrete pipe, 1941-1955
Box 63 Folder 7	Bridge BB-80, Rahway, MT, 1930-1951
Box 63 Folder 8	Bridge BB-82, Rahway, MT, 1913-1930
Box 63 Folder 9	Culvert BB-83, Carterville, MT, 1939-1955
Box 63 Folder 10	Culvert BB-84, Rahway, MT, 1924-1938
Box 63 Folder 11	Bridge BB-86, Rahway, MT, 1928-1976
Box 63 Folder 12	Bridge BB-88, Rahway, MT, 1925-1938
Box 63 Folder 13-14	Bridge BB-90, Ahles, MT, 1925-1936
Box 63 Folder 15-16	Bridge BB-92, Ahles, MT, 1922-1939
Box 63 Folder 17	Bridge BB-93½, Carterville, MT, 1931-1967
Box 63 Folder 18	Bridge BB-94, Ahles, MT, 1935-1944
Box 63 Folder 20	Bridge BB-96, Thebes, MT, 1915-1939
Box 63 Folder 19	Bridge BB-95½, Carterville, MT, 1933-1941
Box 64 Folder 1	Bridge BB-98, Ingomar, MT, with photographs and negatives of masonry, 1911-1970
Box 64 Folder 2	Bridge BB-98½, Ingomar, MT, 1925-1944
Box 64 Folder 3	Culvert BB-99½, Carterville, MT, 1929
Box 64 Folder 4	Bridge BB-100, Ingomar, MT, 1910-1941
Box 64 Folder 5	Culvert BB-101½, Carterville, MT, 1926
Box 64 Folder 6-7	Bridge BB-102, Ingomar, MT, 1925-1937
Box 64 Folder 8	Culvert BB-103½, Carterville, MT, 1929
Box 64 Folder 9-10	Bridge BB-104, Galbraith, MT, 1915-1957
Box 64 Folder 11	Culvert HBB-104 N (A), Ingomar, MT, 1953-1954
Box 64 Folder 12	Culvert HBB-104 N (B), Ingomar, MT, 1957-1966
Box 64 Folder 13	Culvert BB-105, Carterville, MT, 1919
Box 64 Folder 14	Culvert BB-105½, Carterville, MT, 1925
Box 64 Folder 15	Bridge BB-106, Galbraith, MT, 1929-1941
Box 64 Folder 16	Bridge BB-108, Galbraith, MT, with photographs and negatives, 1915-1956
Box 64 Folder 17	Bridge BB-109, Carterville, MT, 1956
Box 64 Folder 18	Bridge BB-110, Hibbard, MT, 1913-1954
Box 64 Folder 19	Culvert BB-111, Carterville, MT, 1937-1948
Box 64 Folder 20	Culvert BB-111½, Orinoco, MT, with photographs and negatives, 1921-1948
Box 64 Folder 21	Bridge BB-112, Sumatra, MT, with photographs and negatives, 1910-1956
Box 65 Folder 1	Culvert BB-113½, Carterville, MT, 1954
Box 65 Folder 2	Bridge BB-114, Hibbard, MT, with photographs and negatives, 1915-1956
Box 65 Folder 3	Bridge BB-115, Cold Springs, MT, with photographs and negatives, 1952-1953
Box 65 Folder 4	Bridge BB-115, Orinoco, MT, with photographs and negatives, 1930-1949
Box 65 Folder 5	Culvert BB-116, Hibbard, MT, 1925-1943
Box 65 Folder 6	Bridge BB-116 and Bridge BB-134, Bascom, MT, 1925-1939
Box 65 Folder 7	Culvert BB-117, Orinoco, MT, with photographs and negatives, 1939
Box 65 Folder 8	Bridge BB-118, Hibbard, MT, with photographs and negatives, 1924-1953
Box 65 Folder 9	Bridge BB-119, Bascom, MT, 1920-1953
Box 66 Folder 1	Bridge BB-120, Melstone, MT, with photographs and negatives of headwalls, 1915-1953
Box 66 Folder 2	Bridge BB-122, Hibbard, MT, 1913-1978
Box 66 Folder 3	Bridge BB-124, Hibbard, MT, with photographs and negatives, 1910-1946
Box 66 Folder 4	Bridge BB-128, Bascom, MT, with negatives, 1910-1943
Box 66 Folder 7	Bridge BB-130, Melstone, MT, with photographs and negatives of masonry, 1917-1951
Box 66 Folder 8	Culvert HBB-130 S, Bascom, MT, 1953
Box 87 Folder 1	Culvert BB-132, Melstone, MT, with photographs and negatives, 1911-1951
Box 87 Folder 2	Bridge BB-134, Melstone, MT, 1927-1957
Box 87 Folder 3	Culvert BB-135, Forsyth, MT, 1941-1942
Box 87 Folder 4-6	Bridge BB-136, Melstone, MT, with photographs and negatives, 1908-1971
Box 87 Folder 8	Bridge BB-136½, Melstone, MT, 1923-1971
Box 87 Folder 9	Culvert BB-137, Forsyth, MT, 1943-1949
Box 87 Folder 10-11	Bridge BB-138, Melstone, MT, with negatives, 1913-1957
Box 87 Folder 12-13	Bridge BB-140, Melstone, MT, with photographs and negatives, 1917-1953
Box 87 Folder 14	Bridge BB-142, Melstone, MT, 1932
Box 87 Folder 15	Bridge BB-144, Melstone, MT, 1929-1948
Box 87 Folder 16	Bridges BB-144 and BB-146, Melstone, MT, 1929-1937
Box 87 Folder 17	Bridge HBB-144 A and B, Geneva, MT, 1935-1948
Box 87 Folder 18	Bridge HBB-144 A (N), Melstone, MT, 1948
Box 87 Folder 19	Bridge BB-146, Geneva, MT, 1932-1955
Box 87 Folder 20	Bridge HBB-146, Geneva, MT, 1937-1944
Box 87 Folder 21	Bridge BB-148, Geneva, MT, 1930-1937
Box 87 Folder 22	Bridge BB-150, Geneva, MT, 1933-1941
Box 87 Folder 23	Bridge BB-150, Geneva, MT, 1933-1942
Box 87 Folder 24	Culvert BB-151¼, Cold Springs, MT, 1939-1958
Box 87 Folder 25	Bridge BB-151½, Cold Springs, MT, 1952-1968
Box 87 Folder 26-27	Bridge BB-152, Geneva, MT, 1923-1958
Box 87 Folder 28	Culvert BB-153, Malaga, MT, 1919
Box 87 Folder 29-30	Bridge BB-154, Musselshell, MT, 1931-1954
Box 87 Folder 31	Bridge BB-156, Musselshell, MT, 1921-1975
Box 87 Folder 32	Culvert BB-157½, Cold Springs, MT, 1931-1954
Box 87 Folder 33-34	Bridge BB-158, Musselshell, MT, 1914-1977
Box 87 Folder 35-36	Bridge BB-158½, Musselshell, MT, 1914-1976
Box 87 Folder 37-38	Bridge BB-160, Musselshell, MT, 1931-1957
Box 87 Folder 39-40	Bridge BB-162, Musselshell, MT, with photographs, 1920-1946
Box 87 Folder 41-42	Bridge BB-164, Delphia, MT, 1937-1956
Box 87 Folder 43	Culvert BB-164½, Antwerp, MT, with photographs and negatives of sump and outlet, 1923-1948
Box 88 Folder 1-2	Bridge BB-166, Delphia, MT, with photographs and negatives of masonry, 1907-1977
Box 88 Folder 3	Bridge BB-167½, Vananda, MT, 1954
Box 88 Folder 4-5	Bridge BB-168, Delphia, MT, 1934-1956
Box 88 Folder 6	Bridge BB-170, Delphia, MT, 1928-1949
Box 88 Folder 7	Bridge BB-171, Antwerp, MT, 1914
Box 88 Folder 8	Bridge BB-172, Delphia, MT, with photographs and negatives, 1921-1958
Box 88 Folder 9-10	Bridge BB-174, Musselshell, MT, 1929-1957
Box 88 Folder 11	Bridge BB-176, Gage, MT, 1927-1956
Box 88 Folder 12	Culvert BB-177, Vananda, MT, 1952-1953
Box 88 Folder 13-14	Bridge BB-178, Gage, MT, 1929-1945
Box 88 Folder 15-16	Bridge BB-180, Gage, MT, 1929-1976
Box 88 Folder 17	Culvert BB-181, Vananda, MT, 1952
Box 88 Folder 18	Bridge BB-182, Gage, MT, 1912-1958
Box 88 Folder 19	Bridge BB-184, Roundup, MT, 1930-1959
Box 88 Folder 20	Bridge HBB-184, Musselshell, MT, 1934-1958
Box 88 Folder 21-22	Bridge BB-184½, Roundup, MT, 1929-1957
Box 88 Folder 23	Bridge BB-186, Roundup, MT, 1926-1948
Box 88 Folder 24	Bridge BB-186¾, Roundup, MT, 1918
Box 88 Folder 25	Bridge BB-188, Roundup, MT, 1928
Box 88 Folder 26	Culvert HBB-189 N, Vananda, MT, 1940-1949
Box 88 Folder 27	Culvert BB-190, Roundup, MT, 1929-1948
Box 88 Folder 28	Bridge BB-192, Roundup, MT, 1928-1953
Box 88 Folder 29	Bridge BB-192½, Roundup, MT, 1935-1938
Box 88 Folder 30-31	Bridge BB-194, Roundup, MT, with photographs, 1914-1978
Box 88 Folder 32	Culverts BB-194⅔, BB-194½, and BB 194¾, Roundup, MT, 1914-1930
Box 88 Folder 33	Bridge BB-196, Roundup, MT, 1929-1939
Box 88 Folder 34	Culvert BB-199½, Ahles, MT, 1932-1940
Box 88 Folder 35	Bridge BB-200, Elso, MT, 1923-1956
Box 88 Folder 36	Bridge HBB-200 S, Elso, MT, 1947-1959
Box 88 Folder 37	Culvert BB-201⅔, Ahles, MT, 1935-1938
Box 88 Folder 38	Bridge BB-202, Elso, MT, 1929
Box 89 Folder 1	Bridge BB-204, Elso, MT, 1928-1930
Box 89 Folder 2	Culvert BB-205¼, Thebes, MT, with photographs and negatives, 1939
Box 89 Folder 3	Culvert BB-205½, Thebes, MT, 1922-1925
Box Folder 4-5	Bridge BB-206, Elso, MT, with photographs and negatives, 1908-1957
Box 89 Folder 6-7	Bridge HBB-206 S, Elso, MT, 1908-1958
Box 89 Folder 8	Culverts BB-207, BB-207½, and BB-207⅔, Thebes, MT, 1928-1942
Box 89 Folder 9	Bridge BB-203, Bundy, MT, 1929-1954
Box 89 Folder 10	Bridge BB-210, Bundy, MT, 1928-1957
Box 89 Folder 11	Culvert BB-211½, Ingomar, MT, 1926-1938
Box 89 Folder 12	Culvert BB-211¼, Ingomar, MT, 1934-1940
Box 89 Folder 13	Bridge BB-212, Bundy, MT, 1929-1957
Box 89 Folder 14	Bridge BB-214, Bundy, MT, 1929-1939
Box 89 Folder 15	Culvert BB-215, Ingomar, MT, 1941
Box 89 Folder 16-17	Bridge BB-216, Lavina, MT, with photographs and negatives, 1938-1958
Box 89 Folder 18	Culvert BB-217⅔, Ingomar, MT, 1945
Box 89 Folder 19	Culvert BB-217⅚, Galbraith, MT, 1923, 1939
Box 89 Folder 20	Culvert BB-217 5/7, Galbraith, MT, 1941-1948
Box 89 Folder 21	Culvert BB-217 7/10, Ingomar, MT, 1945-1948
Box 89 Folder 22	Bridge BB-217 15/16, Sumatra, MT, 1940-1953
Box 89 Folder 23	Bridge BB-218, Lavina, MT, with photographs and negatives, 1946-1958
Box 89 Folder 24	Culvert BB-219⅛, Melstone, MT, 1946-1954
Box 89 Folder 25-26	Bridge BB-220, Lavina, MT, with photographs and negatives, 1907-1978
Box 89 Folder 27	Bridge BB-222, Lavina, MT, with photographs, 1923-1970s
Box 89 Folder 28	Culvert BB-223⅔, Melstone, MT, 1939
Box 89 Folder 29	Culvert BB-223¾, Melstone, MT, 1953
Box 89 Folder 30-31	Bridge BB-224, Lavina, MT, 1927-1955
Box 89 Folder 32-33	Culvert BB-226, Lavina, MT, 1930-1976
Box 89 Folder 34	Culvert BB-227, Melstone, MT, with photographs and negatives, 1939-1958
Box 89 Folder 35	Bridge HBB-227 N, Melstone, MT, 1947-1958
Box 89 Folder 36-37	Bridge BB-228, Lavina, MT, 1936-1956
Box 90 Folder 1	Bridge BB-230, Lavina, MT, 1928-1939
Box 90 Folder 2	Culvert BB-231, Melstone, MT, 1930-1939
Box 90 Folder 3	Bridge BB-232, Slayton, MT, 1939-1957
Box 90 Folder 4	Culvert BB-233, Melstone, MT, with photographs, 1949-1978
Box 90 Folder 5	Bridge BB-234, Lavina, MT, 1914-1958
Box 90 Folder 6-7	Bridge BB-234½, Lavina, MT, with photographs of 1942 washout, 1906-1968
Box 90 Folder 8-9	Bridge BB-236, Lavina, MT, with photographs, 1929-1958
Box 90 Folder 10	Bridge BB-237, Queen's Point, MT, 1941-1961
Box 90 Folder 11	Bridge HBB-237, Queen's Point, MT, 1935-1961
Box 90 Folder 12-13	Bridge BB-238, Slayton, MT, 1929-1957
Box 90 Folder 14	Bridge HBB-239 N, Keene, MT, 1949
Box 90 Folder 15-16	Bridge BB-240, Burgoyne, MT, with photographs, 1908-1976
Box 90 Folder 17	Culvert BB-241, Geneva, MT, 1935-1958
Box 90 Folder 18-19	Bridge BB-242, Burgoyne, MT, with photographs, 1907-1973
Box 90 Folder 20	Culvert BB-243½, Japan, MT (request to move culvert), 1909-1915
Box 90 Folder 21-23	Bridge BB-244, Burgoyne, MT, with photographs and negatives, 1918-1971
Box 90 Folder 24-25	Bridge BB-246, Ryegate, MT, with photographs and negatives, 1908-1979
Box 90 Folder 26	Bridge BB-248, Ryegate, MT, 1927
Box 90 Folder 27	Bridge BB-250, Ryegate, MT, 1928-1952
Box 90 Folder 28	Culvert BB-251, Geneva, MT, with photographs and negatives, 1939
Box 90 Folder 29	Bridge BB-252, Ryegate, MT, 1923-1928
Box 90 Folder 30	Bridge BB-253, Geneva, MT, 1937-1958
Box 90 Folder 31-32	Bridge BB-254, Barber, MT, 1923-1957
Box 90 Folder 33	Bridge BB-255, Geneva, MT, 1941
Box 90 Folder 34	Bridge BB-256, Barber, MT, 1928
Box 90 Folder 35	Culvert BB-257, Musselshell, MT, 1934-1949
Box 90 Folder 36	Bridge BB-258, Barber, MT, 1928
Box 90 Folder 37-38	Bridge BB-260, Barber, MT, with photographs, 1915-1957
Box 90 Folder 39	Culvert BB-260½, Barber, MT, 1948
Box 90 Folder 40-41	Bridge BB-262, Shawmut, MT, 1930-1957
Box 91 Folder 1	Bridge BB-264, Shawmut, MT, 1931-1949
Box 91 Folder 2	Bridge BB-266, Shawmut, MT, 1930-1955
Box 91 Folder 3	Culvert HBB-267, Musselshell, MT, 1946-1947
Box 91 Folder 4	Bridge BB-270, Winnecook, MT, 1929-1961
Box 91 Folder 5	Bridge BB-272, Winnecook, MT, 1929-1939
Box 91 Folder 6	Bridge BB-274, Winnecook, MT, 1936-1957
Box 91 Folder 7	Bridge BB-276, Winnecook, MT, with photographs and negatives, 1922-1959
Box 91 Folder 8	Culvert BB-277, Musselshell, MT, 1917-1918
Box 91 Folder 9-10	Bridge BB-278, Harlowton, MT, with photographs, 1935-1959
Box 91 Folder 11-12	Bridge HBB-278, Harlowton, MT, 1930-1959
Box 91 Folder 13	Culvert BB-279, Musselshell, MT, with negative, 1939
Box 91 Folder 14-15	Bridge BB-280, Harlowton, MT, 1923-1958
Box 91 Folder 16-17	Bridge BB-280½, Harlowton, MT, with photographs, 1940-1973
Box 91 Folder 18	Bridge BB-281, Musselshell, MT, 1915-1951
Box 91 Folder 19	Bridge BB-282½, Harlowton, MT, 1936-1970
Box 91 Folder 20-21	Bridge BB-284, Harlowton, MT, 1930-1939
Box 91 Folder 22-23	Bridge BB-286, Harlowton, MT, with photographs and negatives of masonry, 1939-1971
Box 91 Folder 24	Culvert BB-287½, Delphia, MT, with negative, 1937-1941
Box 91 Folder 25	Bridge BB-288, Harlowton, MT, 1930-1931
Box 91 Folder 26	Culvert BB-295, Delphia, MT, with negative, 1939
Box 91 Folder 27	Culvert HBB-299 S, Delphia, MT, 1944-1956
Box 91 Folder 28-29	Bridge BB-300, Roundup, MT, with photographs and negatives, 1917-1958
Box 91 Folder 30	Bridge BB-302, Roundup, MT, 1937-1956
Box 91 Folder 31	Bridge BB-304, Roundup, MT, 1922-1976
Box 91 Folder 32-33	Bridge BB-306, Roundup, MT, with photographs and negatives, 1932-1976
Box 91 Folder 34	Bridges BB-306 and BB-308 and culvert BB-615, Roundup, MT, 1938
Box 91 Folder 35	Culvert HBB-307, Unknown, MT, 1934
Box 91 Folder 36-37	Bridge BB-308, Roundup, MT, with photographs and negatives, 1938-1976
Box 91 Folder 38	Bridge HBB-309, Delphia, MT, 1935-1957
Box 91 Folder 39	Bridge BB-311, Delphia, MT, with photographs and negatives, 1945-1951
Box 91 Folder 40	Bridge HBB-313, Musselshell, MT, 1934-1953
Box 91 Folder 41	Culvert BB-317, Delphia, MT, 1938-1939
Box 91 Folder 42	Culvert BB-319, Roundup, MT, 1938-1951
Box 91 Folder 43	Culvert BB-323, Gage, MT, with negatives, 1939
Box 91 Folder 44	Culvert HBB-345, Roundup, MT, 1935-1936
Box 91 Folder 45	Bridge HBB-347, Roundup, MT, 1937-1956
Box 91 Folder 46	Culvert BB-351, Delphia, MT, with photographs, 1959-1970s
Box 91 Folder 47	Culvert BB-369, Roundup, MT, 1940-1950
Box 91 Folder 48	Culvert BB-379, Roundup, MT, with negative, 1939-1950
Box 91 Folder 49	Bridge BB-381, Roundup, MT, 1936
Box 91 Folder 50	Bridge BB-387, Elso, MT, with photograph, 1914-1939
Box 91 Folder 51	Bridge HBB-391, Elso, MT, with photographs and negatives, 1923-1956
Box 91 Folder 52	Culvert BB-393, Elso, MT, 1913-1914
Box 92 Folder 1-2	Bridge BB-400, Roundup, MT, 1925-1967
Box 92 Folder 3	Culvert BB-401½, Elso, MT, with negatives, 1939
Box 92 Folder 4	Bridge HBB-401½, Elso, MT, 1936-1956
Box 92 Folder 5	Bridge HBB-403, Elso, MT, 1936-1962
Box 92 Folder 6	Bridge HBB-407, Elso, MT, 1962
Box 92 Folder 7	Culvert BB-409, Elso, MT, 1920
Box 92 Folder 8	Culvert BB-413, Elso, MT, 1945-1959
Box 92 Folder 9	Bridge BB-417, Bundy, MT, 1929-1943
Box 92 Folder 10	Culverts HBB-431 S and HBB-431 N, Lavina, MT, 1947
Box 92 Folder 11	Culvert BB-433, Lavina, MT, 1922-1975
Box 92 Folder 12	Culvert BB-433½, Lavina, MT, 1955
Box 92 Folder 13	Culvert BB-437, Lavina, MT, 1923-1940
Box 92 Folder 14	Culvert BB-439½, Lavina, MT, 1941
Box 92 Folder 15	Culvert BB-443, Lavina, MT, 1941-1959
Box 92 Folder 16	Bridge BB-455, Burgoyne, MT, 1948-1949
Box 92 Folder 17	Culvert BB-457½, Burgoyne, MT, 1930
Box 92 Folder 18	Culvert BB-459, Burgoyne, MT, 1943
Box 92 Folder 19	Bridge HBB-465, Ryegate, MT, 1937-1963
Box 92 Folder 20	Culvert BB-469, Ryegate, MT, 1962
Box 92 Folder 21	Culvert BB-483, Ryegate, MT, 1939
Box 92 Folder 22	Culvert BB-485, Ryegate, MT, with photograph, 1939
Box 92 Folder 23	Culvert BB-487, Ryegate, MT, 1927-1956
Box 92 Folder 24	Culvert BB-489, Ryegate, MT, 1944-1946
Box 92 Folder 25	Bridge BB-493, Ryegate, MT, 1924-1948
Box 92 Folder 26	Culvert BB-493½, Ryegate, MT, 1923-1936
Box 92 Folder 27	Culvert BB-495, Barber, MT, 1952-1954
Box 92 Folder 28	Culvert BB-497, Barber, MT, 1962-1965
Box 92 Folder 29	Culvert BB-502, Unknown, MT, 1917
Box 92 Folder 30	Culvert BB-515, Ingomar, MT, 1935
Box 92 Folder 31	Culvert HBB-521⅔, Barber, MT, 1939
Box 92 Folder 32	Culvert HBB-523¾, Barber, MT, 1948
Box 92 Folder 33	Culvert BB-525, Ryegate, MT, 1920-1954
Box 92 Folder 34-35	Culvert BB-529, Shawmut, MT, 1918-1959
Box 92 Folder 36	Culvert BB-531, Shawmut, MT, with photographs and negatives of water depth, 1939
Box 92 Folder 37	Culvert BB-535, Shawmut, MT, 1955-1962
Box 92 Folder 38	Culvert BB-539, Shawmut, MT, 1924-1961
Box 92 Folder 39	Culvert BB-541, Shawmut, MT, 1932-1939
Box 92 Folder 40	Bridge HBB-547 N, Shawmut, MT, 1935-1944
Box 92 Folder 41	Culvert HBB-549, Shawmut, MT, 1939-1950
Box 92 Folder 42	Culvert HBB-49½, Shawmut, MT, 1939
Box 92 Folder 43	Bridge BB-551½, Winnecook, MT, 1940-1941
Box 92 Folder 44	Bridge BB-553, Winnecook, MT, 1930-1938
Box 92 Folder 45	Culvert BB-559, Winnecook, MT, 1931-1933
Box 92 Folder 46	Culvert BB-565, Winnecook, MT, 1943
Box 92 Folder 47	Culvert HBB-567½, Harlowton, MT, 1928-1958
Box 92 Folder 48	Bridge HBB-569 N, Harlowton, MT, 1938-1963
Box 92 Folder 49	Culvert BB-571, Harlowton, MT, with photographs, including some of BB-278, 1947-1953
Box 92 Folder 50	Culvert BB-577, Harlowton, MT, with negatives, 1956-1957
Box 92 Folder 51	Culvert BB-573, Winnecook, MT, 1936-1957
Box 92 Folder 52-53	Culvert BB-587, Harlowton, MT, 1936-1957
Box 92 Folder 54	Culvert BB-589, Harlowton, MT, 1946
Box 92 Folder 55	Bridge HBB-589, Harlowton, MT, 1939
Box 92 Folder 56	Culvert BB-591, Harlowton, MT, 1939-1941
Box 92 Folder 57	Culvert BB-593, Harlowton, MT, 1929
Box 92 Folder 58	Culvert BB-597, Harlowton, MT, 1931
Box 92 Folder 59	Culvert BB-609, Roundup, MT, 1934
Box 92 Folder 60	Culvert BB-617, Roundup, MT, 1937
Box 92 Folder 61	Culvert BB-619, Roundup, MT, 1925
Box 21 Folder 14	Bridge BN-810, Deming, WA, 1921-1922
Box 92 Folder 62	Main Line Bridges Constructed Prior to 1925: CCs and DDs, 1944
Box 92 Folder 63	Bridge CC-2, Valencia, MT, 1930-1948
Box 92 Folder 64	Bridge CC-4, Valencia, MT, 1913
Box 92 Folder 65	Bridge CC-6, Valencia, MT, 1940-1971
Box 92 Folder 66	Bridge CC-8, Valencia, MT, 1940-1955
Box 92 Folder 67	Bridge CC-10, Two Dot, MT, 1940-1941
Box 92 Folder 68	Bridge CC-12, Two Dot, MT, 1940-1966
Box 92 Folder 69	Bridge CC-14, Two Dot, MT, 1913
Box 92 Folder 70	Bridge CC-16, Two Dot, MT, 1940-1975
Box 92 Folder 71	Culvert HCC-19½, Valencia, MT, 1959
Box 92 Folder 72	Bridge CC-18, Two Dot, MT, 1931-1948
Box 92 Folder 73	Culvert CC-19, Valencia, MT, 1929-1974
Box 92 Folder 74	Bridge CC-20, Two Dot, MT, 1929-1940
Box 92 Folder 75	Bridge CC-22, Two Dot, MT, 1929
Box 92 Folder 76	Bridge CC-23, Valencia, MT, 1936-1948
Box 93 Folder 1-2	Bridge CC-26, Two Dot, MT, 1929-1958
Box 93 Folder 3	Bridge CC-28, Selkirk, MT, 1929
Box 93 Folder 4	Culvert CC-29½, Valencia, MT, 1928
Box 93 Folder 5	Culvert CC-29⅔, Valencia, MT, 1930-1935
Box 93 Folder 6	Bridge CC-30, Selkirk, MT, with photographs and negatives, 1929-1944
Box 93 Folder 7	Bridge CC-32, Selkirk, MT, 1937-1956
Box 93 Folder 8	Bridge CC-33, Valencia, MT, 1940
Box 93 Folder 9	Bridge CC-34, Selkirk, MT, 1914-1945
Box 93 Folder 10	Bridges CC-34 and CC-36, Selkirk, MT, 1939-1948
Box 93 Folder 11	Culvert CC-35, Valencia, MT, 1931-1934
Box 93 Folder 12	Bridge CC-36, Selkirk, MT, 1932-1940
Box 93 Folder 13-14	Bridge CC-36½, Martinsdale, MT, 1938-1971
Box 93 Folder 15	Culvert CC-37½, Two Dot, MT, 1926
Box 93 Folder 16	Bridge CC-38, Martinsdale, MT, 1931-1948
Box 93 Folder 17	Bridge CC-40, Martinsdale, MT, 1914-1969
Box 93 Folder 18	Culvert CC-41½, Valencia, MT, 1927-1940
Box 93 Folder 19	Bridge CC-42, Groveland, MT, 1936-1968
Box 93 Folder 20	Culverts CC-43, CC-44, and CC-45, Two Dot, MT, 1919
Box 93 Folder 21	Bridge CC-44, Groveland, MT, 1931
Box 93 Folder 22	Culvert CC-45, Two Dot, MT, 1931
Box 93 Folder 23	Bridge CC-46, Groveland, MT, 1920-1979
Box 93 Folder 24	Bridge CC-48, Groveland, MT, 1943-1948
Box 93 Folder 25	Culvert CC-51, Two Dot, MT, 1940
Box 93 Folder 26	Bridge CC-52, Groveland, MT, 1930-1948
Box 93 Folder 27	Culvert CC-55, Two Dot, MT, 1930-1937
Box 93 Folder 28	Bridge CC-57, Two Dot, MT, 1923
Box 93 Folder 29	Culvert CC-59, Two Dot, MT, 1924-1936
Box 93 Folder 30	Culvert CC-61, Two Dot, MT, 1919-1931
Box 93 Folder 31	Bridge CC-62, Groveland, MT, 1930-1948
Box 93 Folder 32	Bridge CC-66, Lennep, MT, 1940-1942
Box 93 Folder 33	Bridge HCC-66, Lennep, MT, 1931-1974
Box 93 Folder 34	Culvert CC-67, Two Dot, MT, 1935-1941
Box 93 Folder 35-36	Bridge CC-68, Lennep, MT, 1930-1976
Box 93 Folder 37	Culvert CC-69, Two Dot, MT, 1952-1958
Box 93 Folder 38	Bridge CC-70, Lennep, MT, 1930-1948
Box 93 Folder 39	Culvert CC-71, Two Dot, MT, 1931-1937
Box 93 Folder 40	Bridge CC-72, Lennep, MT, 1936-1948
Box 93 Folder 41	Bridges CC-74 and CC-76, Lennep, MT, 1931-1976
Box 93 Folder 42	Bridge CC-76, Lennep, MT, 1939-1970
Box 93 Folder 43	Bridge CC-78, Lennep, MT, 1930-1972
Box 93 Folder 44	Bridge CC-80, Lennep, MT, 1914-1929
Box 93 Folder 45	Bridge CC-82, Lennep, MT, 1930-1948
Box 93 Folder 46	Bridge CC-84, Lennep, MT, 1930-1948
Box 93 Folder 47	Bridge CC-86, Lennep, MT, 1944-1948
Box 93 Folder 48	Bridge CC-88, Lennep, MT, 1930-1948
Box 93 Folder 49	Bridge HCC-90, Lennep, MT, 1940-1960
Box 93 Folder 50	Bridge CC-91, Two Dot, MT, 1919-1930
Box 93 Folder 51	Bridges CC-92 and CC-94, Lennep, MT, 1930-1947
Box 93 Folder 52	Bridge CC-94, Lennep, MT, 1930-1931
Box 93 Folder 53-54	Bridge CC-96, Bruno, MT, 1945-1956
Box 93 Folder 55-56	Bridge CC-98, Bruno, MT, 1944-1977
Box 93 Folder 57	Culvert CC-100, Bruno, MT, 1940-1946
Box 93 Folder 58	Bridges CC-100 and CC-102, Bruno, MT, 1935-1947
Box 93 Folder 59	Bridge CC-102, Bruno, MT, 1940-1944
Box 93 Folder 60-61	Bridge CC-104, Bruno, MT, with photographs, 1918-1959
Box 93 Folder 62	Bridge CC-106, Bruno, MT, 1929
Box 93 Folder 63	Bridges CC-106 and CC-106½, Bruno, MT, 1929-1956
Box 93 Folder 64	Bridge CC-108, Bruno, MT, 1929
Box 93 Folder 65	Bridges CC-108 and CC-114, Loweth, MT, 1929-1956
Box 93 Folder 66	Culvert CC-109½, Martinsdale, MT, 1918-1920
Box 93 Folder 67	Bridge CC-110, Bruno, MT, 1929
Box 93 Folder 68	Bridge CC-112, Bruno, MT, 1929
Box 93 Folder 69	Bridge CC-114, Bruno, MT, 1929
Box 93 Folder 70	Bridge CC-116, Bruno, MT, 1929-1936
Box 93 Folder 71	Culvert CC-118, Hamen, MT, with photograph, 1914-1952
Box 93 Folder 72	Bridge CC-120, Hamen, MT, 1914-1976
Box 93 Folder 73	Culverts CC-121, CC-125, and CC-127, Martinsdale, MT, 1918-1919
Box 93 Folder 74	Bridge CC-122, New Dorsey, MT, with photographs, 1969
Box 93 Folder 75	Bridge CC-124, New Dorsey, MT, 1914-1948
Box 93 Folder 76	Bridge CC-126, New Dorsey, MT, 1935-1948
Box 93 Folder 77-78	Bridge CC-128, Ringling, MT, 1935-1976
Box 93 Folder 79	Bridge CC-128½, Ringling, MT, 1938-1939
Box 93 Folder 80	Bridge CC-130, Ringling, MT, 1936-1948
Box 93 Folder 81	Bridge CC-132, Moyne, MT, 1915-1948
Box 93 Folder 82	Culvert CC-133, Groveland, MT, 1928
Box 93 Folder 83-84	Bridge CC-134, Moyne, MT, 1914-1977
Box 93 Folder 85	Bridge CC-135, Groveland, MT, 1931-1937
Box 93 Folder 86-87	Bridge CC-136, Moyne, MT, 1916-1971
Box 93 Folder 88	Bridge CC-137, Groveland, MT, 1930-1935
Box 94 Folder 1	Bridge CC-138, Moyne, MT, 1935-1948
Box 94 Folder 2	Bridge CC-140, Moyne, MT, 1942-1948
Box 94 Folder 3	Bridges CC-142 and CC-144, Moyne, MT, 1936-1938
Box 94 Folder 4-5	Bridge CC-146, Moyne, MT, 1920-1948
Box 94 Folder 6-7	Bridge CC-148, Fanalulu, MT, 1930-1948
Box 94 Folder 8-9	Bridge CC-150, Moyne, MT, 1930-1948
Box 94 Folder 10	Bridge CC-152, Fanalulu, MT, 1932-1952
Box 94 Folder 11-12	Bridge CC-154, Fanalulu, MT, 1930-1946
Box 94 Folder 13	Bridge CC-155, Groveland, MT, 1930-1935
Box 94 Folder 14	Bridge HCC-155½, Groveland, MT, 1957-1965
Box 94 Folder 15	Bridge CC-156, Fanalulu, MT, 1943-1952
Box 94 Folder 16-17	Bridge CC-158, Fanalulu, MT, 1943-1947
Box 94 Folder 18	Bridge HCC-159½, Groveland, MT, 1943-1960
Box 94 Folder 19-20	Culvert CC-160, Fanalulu, MT, 1943-1960
Box 94 Folder 21-22	Bridge CC-162, Fanalulu, MT, 1943-1954
Box 94 Folder 23-24	Bridge CC-164, Sixteen, MT, with photographs, 1930-1968
Box 94 Folder 25	Bridge HCC-165, Groveland, MT, 1942-1943
Box 94 Folder 26	Bridge CC-166, Sixteen, MT, 1930-1948
Box 94 Folder 27	Culvert CC-167, Lennep, MT, 1928
Box 94 Folder 28-29	Bridge CC-168, Sixteen, MT, with photographs, 1913-1971
Box 94 Folder 30	Culvert CC-169, Lennep, MT, 1931-1939
Box 94 Folder 31-33	Bridge HCC-170½, Sixteen, MT, with photographs, 1943-1977
Box 94 Folder 34	Culvert CC-172, Sixteen, MT, 1914, 1950
Box 94 Folder 35	Bridges CC-173 and HCC-173½, Lennep, MT, 1967
Box 94 Folder 36	Bridge CC-173½, Lennep, MT, 1914-1967
Box 94 Folder 37-38	Bridge CC-174, Sixteen, MT, 1914-1971
Box 94 Folder 39	Culvert CC-175, Butte, MT, 1943
Box 94 Folder 40	Culvert CC-175½, Lennep, MT, 1929
Box 94 Folder 41	Bridge CC-175.562, Lennep, MT, 1978
Box 94 Folder 42-43	Bridge CC-176, Sixteen, MT, 1936-1973
Box 94 Folder 44	Culvert CC-177, Lennep, MT, 1930-1932
Box 94 Folder 45-47	Bridge CC-178, Sixteen, MT, 1944-1976
Box 94 Folder 48	Culvert CC-179, Lennep, MT, 1940
Box 94 Folder 49	Culvert CC-181, Lennep, MT, 1936
Box 94 Folder 50	Bridge CC-182, Canyon, MT, 1910
Box 94 Folder 51-52	Bridge CC-184, Sixteen, MT, 1936-1978
Box 95 Folder 1	Culvert CC-185, Lennep, MT, 1936
Box 95 Folder 2-3	Bridge CC-186, Sixteen, MT, 1935-1971
Box 95 Folder 4-5	Bridge CC-188, Francis, MT, with photographs and negatives of masonry, 1939-1971
Box 95 Folder 6	Bridge CC-190, Unknown, MT (near Eagle Nest Tunnel), 1909
Box 95 Folder 7	Bridge CC-192, Unknown, MT, 1909
Box 95 Folder 8	Culvert CC-194, Francis, MT, with photographs, 1914-1942
Box 95 Folder 9	Bridge CC-196, Josephine, MT, 1914-1938
Box 95 Folder 10	Culvert CC-199, Loweth, MT, 1925-1955
Box 95 Folder 11-12	Bridge CC-200, Nathan, MT, 1930-1948
Box 95 Folder 13-14	Bridge CC-202, Nathan, MT, 1931-1951
Box 95 Folder 15	Culvert CC-203½, Unknown, MT, 1909-1958
Box 95 Folder 16	Bridge CC-204, Nathan, MT, 1917-1948
Box 95 Folder 17	Bridge CC-205½, Hamen, MT, with photographs, 1909-1969
Box 95 Folder 18-19	Bridge CC-206, Nathan, MT, 1933-1971
Box 95 Folder 20-21	Bridge CC-208, Nathan, MT, 1930-1948
Box 95 Folder 22-23	Bridge CC-210, Nathan, MT, 1915-1971
Box 95 Folder 24	Bridge CC-211¾, Higgins Spur, MT, 1935-1939
Box 95 Folder 25	Bridge CC-212, Nathan, MT, 1935-1943
Box 95 Folder 26	Bridge CC-214, Nathan, MT, 1914-1943
Box 95 Folder 27-28	Bridge CC-216, Maudlow, MT, 1937-1945
Box 95 Folder 29-30	Bridge CC-218, Maudlow, MT, 1940-1946
Box 95 Folder 31-32	Bridge CC-220, Maudlow, MT, 1939-1971
Box 95 Folder 33-34	Culvert CC-222, Maudlow, MT, 1919-1959
Box 95 Folder 35	Culvert HCC-222, Maudlow, MT, 1944-1958
Box 95 Folder 36	Culvert CC-223, Ringling, MT, 1935
Box 95 Folder 37-38	Bridge CC-224, Maudlow, MT, 1931-1976
Box 95 Folder 39	Bridge CC-226, Maudlow, MT, 1917-1943
Box 95 Folder 40-41	Bridge CC-228, Deer Park, MT, with photographs and negatives, 1914-1977
Box 95 Folder 42-44	Bridge CC-230, Maudlow, MT, with photographs and negatives, 1910-1978
Box 95 Folder 45	Bridges CC-232 and CC-234, Deer Park, MT, 1910-1952
Box 95 Folder 46	Culvert CC-233½, Moyne, MT, 1948
Box 95 Folder 47	Bridge CC-234, Fanalulu, MT, 1943
Box 95 Folder 48	Culvert CC-235, Fanalulu, MT, 1928
Box 95 Folder 49	Bridge CC-236, Deer Park, MT, 1910-1971
Box 95 Folder 50	Bridges CC-136 and CC-238, Fanalulu, MT, with photographs, 1943-1971
Box 96 Folder 1	Bridge CC-238, Deer Park, MT, with photographs and negatives, 1910-1971
Box 96 Folder 2	Bridge CC-240, Deer Park, MT, with photographs and negatives, 1910-1971
Box 96 Folder 3-4	Bridge CC-242, Deer Park, MT, 1910-1971
Box 96 Folder 5	Bridge CC-244, Deer Park, MT, 1928-1978
Box 96 Folder 6-7	Bridge CC-246, Deer Park, MT, with photographs and negative, 1910-1978
Box 96 Folder 8-9	Bridge CC-247, Sixteen, MT, 1916-1948
Box 96 Folder 10-11	Bridge CC-248, Penfield, MT, 1935-1957
Box 96 Folder 12	Bridge CC-252, Cardinal, MT, 1930-1970
Box 96 Folder 13	Culvert CC-255, Canyon, MT, 1927
Box 96 Folder 14	Culverts CC-254 to CC-256, Crane, MT, 1910-1952
Box 96 Folder 15-17	Bridge CC-258, Crane, MT, with photographs and negatives, 1910-1978
Box 96 Folder 18-19	Bridge CC-260, Cardinal, MT, 1936-1978
Box 96 Folder 20	Culverts CC-262 to CC-264, Lombard, MT, 1910-1943
Box 96 Folder 21-22	Bridge CC-266, Lombard, MT, with photographs and negatives, 1935-1965
Box 96 Folder 23	Bridges CC-267 and CC-269½, Francis, MT, 1939-1942
Box 96 Folder 24-25	Bridge CC-268, Lombard, MT, with photographs, 1910-1971
Box 96 Folder 26	Bridge CC-270, Lombard, MT, 1910, 1948
Box 96 Folder 27-28	Bridge CC-272, Lombard, MT, 1936-1978
Box 96 Folder 29-30	Bridge CC-274, Lombard, MT, with slide, 1907-1957
Box 96 Folder 31-32	Bridge CC-276, Barron, MT, 1931-1959
Box 96 Folder 33	Bridge CC-278, Barron, MT, 1930-1959
Box 96 Folder 34	Bridge CC-280, Barron, MT, 1918-1948
Box 96 Folder 35	Bridge CC-281, Francis, MT, 1936-1940
Box 96 Folder 36	Bridge CC-282, Barron, MT, 1918-1948
Box 96 Folder 37	Proposed culvert west of CC-283, Nathan, MT, with photograph, 1969
Box 96 Folder 38	Bridge CC-284, Eustis, MT, 1929-1948
Box 96 Folder 39	Bridge CC-286, Eustis, MT, 1931-1944
Box 96 Folder 40	Bridge CC-288, Eustis, MT, 1931-1948
Box 96 Folder 41	Bridge CC-289½, Maudlow, MT, 1927
Box 96 Folder 42	Bridge CC-290, Eustis, MT, 1936-1960
Box 97 Folder 1-2	Bridge CC-292, Three Forks, MT, 1919-1948
Box 97 Folder 3-4	Bridge CC-294, Three Forks, MT, 1932-1948
Box 97 Folder 5	Bridges CC-294 and CC-296, Three Forks, MT, 1919-1943
Box 97 Folder 6	Bridge CC-296, Three Forks, MT, 1932-1965
Box 97 Folder 7-9	Bridge CC-298, Three Forks, MT, with photographs and negatives, 1906-1977
Box 97 Folder 10	Bridge CC-300, Three Forks, MT, 1913-1971
Box 97 Folder 11	Bridge CC-300 and CC-300½, Three Forks, MT, 1937-1954
Box 97 Folder 12	Bridge CC-300¼, Three Forks, MT, 1966-1969
Box 97 Folder 13-14	Bridge CC-302, Willow Creek, MT, 1919-1948
Box 97 Folder 15	Bridge CC-304, Willow Creek, MT, 1930-1947
Box 97 Folder 16	Bridge CC-306, Willow Creek, MT, 1914
Box 97 Folder 17	Culvert CC-307, Deer Park, MT, 1925, 1945
Box 97 Folder 18	Culvert CC-307½, Deer Park, MT, 1925-1936
Box 97 Folder 19	Bridge CC-308, Sappington, MT, 1928
Box 97 Folder 20	Bridges CC-308 and CC-310 Sappington, MT, 1928-1939
Box 97 Folder 21	Bridge CC-310, Sappington, MT, 1929-1941
Box 97 Folder 22	Bridge CC-312, Sappington, MT, 1929-1963
Box 97 Folder 23	Bridge CC-312½, Sappington, MT, 1945-1951
Box 97 Folder 24	Bridge CC-313, Cardinal, MT, 1914-1936
Box 97 Folder 25	Bridge CC-314, Sappington, MT, 1919-1958
Box 97 Folder 26	Bridges CC-315 and CC-316, Alcazar, MT, 1913-1939
Box 97 Folder 27	Culvert CC-317, Cardinal, MT, 1923
Box 97 Folder 28-29	Bridge CC-318, Jefferson Island, MT, 1942-1977
Box 97 Folder 30	Bridge CC-320, Jefferson Island, MT, 1921-1945
Box 97 Folder 31-32	Bridge CC-322, Jefferson Island, MT, 1922-1978
Box 97 Folder 33-34	Bridge CC-324, Jefferson Island, MT, 1920-1978
Box 97 Folder 35-37	Bridge CC-326, Jefferson Island, MT, with photographs and negatives, 1918-1977
Box 97 Folder 38	Bridge HCC-326, Jefferson Island, MT, 1940-1963
Box 97 Folder 39	Bridge HCC-326½, Jefferson Island, MT, 1949-1958
Box 97 Folder 40-41	Bridge CC-328, Jefferson Island, MT, 1944-1949
Box 97 Folder 42	Bridge CC-330, Jefferson Island, MT, 1931-1948
Box 97 Folder 43	Bridge CC-332, Piedmont, MT, 1932-1948
Box 97 Folder 44	Bridge CC-334, Piedmont, MT, 1920-1948
Box 97 Folder 45	Bridge CC-336, Piedmont, MT, 1932-1950
Box 97 Folder 46	Bridges CC-338 and CC-340, Piedmont, MT, 1929-1946
Box 97 Folder 47	Bridge CC-339, Lombard, MT, 1969
Box 97 Folder 48	Bridge CC-340, Piedmont, MT, 1930-1935
Box 97 Folder 49	Bridge CC-342, Vendome, MT, 1930-1932
Box 97 Folder 50	Bridge CC-342½, Vendome, MT, 1936
Box 97 Folder 51	Bridge CC-344, Grace, MT, 1922-1971
Box 97 Folder 52	Bridge CC-346, Donald, MT, 1929-1953
Box 97 Folder 53	Bridge CC-348, Donald, MT, 1943-1957
Box 97 Folder 54	Bridge CC-349, Barron, MT, 1929
Box 97 Folder 55	Bridge CC-350, Butte Yard, MT, 1921-1934
Box 97 Folder 56	Bridge CC-352, Colorado Junction, MT, 1914-1915
Box 98 Folder 1	Bridge CC-352 A, Butte, MT, 1925-1967
Box 98 Folder 2	Culvert CC-352 B, Butte, MT, 1915
Box 98 Folder 3	Bridge CC-352 C, Butte, MT, 1920
Box 98 Folder 4	Bridge CC-352 D and CC-356, Butte, MT, with photographs, 1908-1969
Box 98 Folder 5	Bridge CC-353, Barron, MT, 1915-1948
Box 98 Folder 6-7	Bridge CC-354, Butte, MT, 1929-1939
Box 98 Folder 8-9	Bridge CC-358, Butte, MT, 1921-1974
Box 98 Folder 10	Bridge CC-360, Butte, MT, 1919-1934
Box 98 Folder 11	Bridge CC-360½, Alloy, MT, 1916-1917
Box 98 Folder 12	Bridge CC-360¼, Colorado Junction, MT, 1971
Box 98 Folder 13	Bridge CC-360⅖ and CC-360 3/7, Butte, MT, 1962-1980
Box 98 Folder 14	Bridge CC-360⅛, Butte, MT, 1936
Box 98 Folder 15	Bridge CC-360⅜, Butte, MT, 1954-1964
Box 98 Folder 16	Bridge CC-360 1/16, Butte, MT, 1943-1972
Box 98 Folder 17	Bridge CC-361, Eustis, MT, 1963
Box 98 Folder 18-19	Bridge CC-362, Alloy, MT, 1924-1948
Box 98 Folder 20-21	Bridge CC-364, Rocker, MT, 1929-1943
Box 98 Folder 22-23	Bridge CC-364½, Rocker, MT, 1942-1948
Box 98 Folder 24-25	Bridge CC-366, Rocker, MT, 1935-1948
Box 98 Folder 26	Bridge CC-366¼, Nissler, MT, 1980
Box 98 Folder 27-28	Bridge CC-368, Dawson, MT, 1931-1948
Box 98 Folder 29	Bridge CC-370, Dawson, MT, 1931-1963
Box 98 Folder 30-31	Bridge CC-372, Dawson, MT, 1931-1944
Box 98 Folder 32	Bridge CC-373½, Eustis, MT, 1938
Box 98 Folder 33-34	Bridge CC-374, Dawson, MT, 1931-1952
Box 98 Folder 35	Bridge CC-376, Dawson, MT, 1936-1974
Box 98 Folder 36-37	Bridge CC-378, Dawson, MT, 1936-1971
Box 98 Folder 38	Bridge CC-380, Silver Bow, MT, 1913-1951
Box 98 Folder 39	Bridge CC-381, Three Forks, MT, 1920-1946
Box 98 Folder 40	Bridge CC-382, Dawson, MT, 1931-1934
Box 98 Folder 41	Bridge CC-383, Willow Creek, MT, 1920-1932
Box 98 Folder 42-43	Bridge CC-384, Dawson, MT, 1929-1971
Box 98 Folder 44	Bridges CC-386 and CC-388, Dawson, MT, 1912-1929
Box 98 Folder 45	Bridge CC-391, Willow Creek, MT, 1920-1946
Box 98 Folder 46	Bridge CC-393, Willow Creek, MT, 1920-1946
Box 98 Folder 47	Bridge CC-394, Finlen, MT, 1918-1942
Box 98 Folder 48-49	Bridge CC-394½, Finlen, MT, 1922-1956, undated
Box 98 Folder 50	Bridge CC-394⅔, Finlen, MT, 1962-1980
Box 98 Folder 51	Bridge CC-395, Willow Creek, MT, 1928-1943
Box 98 Folder 52	Bridge CC-396, Finlen, MT, 1931-1940
Box 99 Folder 1-2	Bridge CC-398, Cullen, MT, 1930-1962
Box 99 Folder 3	Bridge CC-400, Cullen, MT, 1922-1943
Box 99 Folder 4	Bridge CC-402, Morel, MT, 1921-1940
Box 99 Folder 5-6	Bridge CC-404, Morel, MT, 1930-1947
Box 99 Folder 7-8	Bridge CC-406, Morel, MT, 1932-1977
Box 99 Folder 9-10	Bridge CC-408, Morel, MT, 1934-1971
Box 99 Folder 11	Bridge CC-409, Willow Creek, MT, 1919
Box 99 Folder 12-13	Bridge CC-410, Morel, MT, with negatives, 1935-1978
Box 99 Folder 14	Bridge CC-412, Morel, MT, 1931-1943
Box 99 Folder 15	Bridge CC-414, Morel, MT, 1937-1940
Box 99 Folder 16-17	Bridge CC-416, Morel, MT, with photographs, 1923-1974
Box 99 Folder 18	Bridge CC-417, Willow Creek, MT, 1924-1935
Box 99 Folder 19-20	Bridge CC-418, Morel, MT, 1928-1961
Box 99 Folder 21	Bridge HCC-418, Sinclair, MT, 1949
Box 99 Folder 22-23	Bridge CC-420, Morel, MT, 1933-1947
Box 99 Folder 24-25	Bridge CC-422, Sinclair, MT, 1940-1956
Box 99 Folder 26	Bridges CC-424 and CC-424¼, Sinclair, MT, 1930-1955, 1969-1978
Box 99 Folder 27	Bridge CC-425, Sappington, MT, 1919-1932
Box 99 Folder 28-29	Bridge CC-426, Sinclair, MT, 1937-1969
Box 99 Folder 30-31	Bridge CC-428, Sinclair, MT, 1944-1955
Box 99 Folder 32	Bridge CC-430, Sinclair, MT, 1937-1942
Box 99 Folder 33	Bridge CC-431, Sappington, MT, 1924-1959
Box 99 Folder 34	Bridge CC-432, Deer Lodge, MT, 1936-1938
Box 99 Folder 35	Bridge CC-433, Sappington, MT, 1957-1958
Box 99 Folder 36-37	Bridge CC-434, Deer Lodge, MT, 1917-1959
Box 99 Folder 38	Bridge CC-437, Sappington, MT, 1920-1932
Box 99 Folder 39	Culvert CC-437½, Sappington, MT, 1932-1945
Box 99 Folder 40	Culvert CC-437¾, Sappington, MT, 1935-1936
Box 99 Folder 41	Bridge CC-443, Alcazar, MT, 1930
Box 99 Folder 42	Bridge CC-443½, Alcazar, MT, 1923-1924
Box 99 Folder 43	Bridge CC-447, Alcazar, MT, with photographs and negatives, 1910-1945
Box 99 Folder 44	Culvert CC-457, Alcazar, MT, 1923
Box 99 Folder 45	Culvert CC-473, Jefferson Island, MT, 1932-1934
Box 99 Folder 46	Bridge CC-475, Jefferson Island, MT, 1917-1934
Box 99 Folder 47	Culvert HCC-477, Jefferson Island, MT, 1944
Box 99 Folder 48	Culvert HCC-479, Jefferson Island, MT, 1919-1930
Box 99 Folder 49	Culvert CC-481, Jefferson Island, MT, 1919-1923
Box 99 Folder 50	Culvert CC-487, Piedmont, MT, 1922-1923
Box 99 Folder 51	Culvert CC-489, Piedmont, MT, 1922-1930
Box 99 Folder 52	Culvert CC-489½, Piedmont, MT, 1925-1939
Box 99 Folder 53	Culvert CC-495, Piedmont, MT, 1919-1929
Box 99 Folder 54-55	Culvert CC-497, Piedmont, MT, 1919-1929, 1942
Box 99 Folder 56	Culvert HCC-497, Piedmont, MT, 1942-1946
Box 99 Folder 57	Culvert CC-499, Piedmont, MT, 1919-1931
Box 99 Folder 58	Culvert CC-505, Piedmont, MT, 1935-1949
Box 99 Folder 59	Culvert CC-507, Piedmont, MT, 1923-1924
Box 99 Folder 60	Culvert CC-509, Piedmont, MT (AFE #11912), 1923-1925
Box 99 Folder 61	Culvert CC-511, Piedmont, MT, 1929-1976
Box 99 Folder 62	Culvert CC-515½, Vendome, MT, 1929
Box 99 Folder 63	Culvert CC-517, Vendome, MT, 1924, undated
Box 99 Folder 64	Culvert CC-525, Vendome, MT, 1929
Box 99 Folder 65	Culvert CC-527, Cedric, MT, 1930
Box 99 Folder 66	Culvert CC-529, Cedric, MT, 1923
Box 99 Folder 67	Culvert CC-533, Cedric, MT, 1930
Box 99 Folder 68	Culvert CC-533½, Cedric, MT, 1945
Box 99 Folder 69	Culvert CC-533¼, Cedric, MT, 1943
Box 99 Folder 70	Culvert CC-539, Grace, MT, 1926
Box 99 Folder 71	Culvert CC-547, Grace, MT, 1919-1959
Box 99 Folder 72	Culvert CC-549, Grace, MT, 1926
Box 99 Folder 73	Culvert CC-551, Grace, MT, 1930
Box 99 Folder 74	Culvert CC-557, Grace, MT, 1926
Box 99 Folder 75	Culvert CC-563, Donald, MT, 1923-1924
Box 99 Folder 76	Culvert CC-569, Donald, MT, 1929
Box 99 Folder 77	Culvert CC-571, Donald, MT, 1929-1975
Box 99 Folder 78	Culvert CC-572, Lewistown, MT, 1913
Box 99 Folder 79	Culvert CC-573, Donald, MT, 1927
Box 99 Folder 80	Culvert CC-575, Donald, MT, 1927
Box 99 Folder 81	Culvert CC-579, Donald, MT, 1925
Box 99 Folder 82	Culvert CC-581, Donald, MT, 1925
Box 99 Folder 83	Culvert CC-583, Donald, MT, 1925
Box 99 Folder 84	Culverts CC-585 and CC-585¾, Donald, MT, 1925-1959
Box 99 Folder 85	Culvert CC-591, Penfield, MT, 1929
Box 99 Folder 86	Culvert CC-593, Penfield, MT, 1929-1930
Box 99 Folder 87	Culvert CC-598½, Three Forks, MT, 1961-1966
Box 100 Folder 1-3	Bridge CC-600, Three Forks, MT, with photographs and negatives, 1924-1980
Box 100 Folder 4	Culvert CC-601, Penfield, MT, 1925-1929
Box 100 Folder 5	Bridge CC-602, Three Forks, MT, 1933-1964
Box 100 Folder 6	Culvert CC-603, Janney, MT, 1953
Box 100 Folder 7	Bridge CC-604, Carpenter, MT, 1932-1949
Box 100 Folder 8	Culvert CC-605, Penfield, MT, 1929
Box 100 Folder 9	Bridge CC-606, Carpenter, MT, 1930-1951
Box 100 Folder 10	Bridge CC-608, Carpenter, MT, 1920-1971
Box 100 Folder 11	Bridge CC-610, Logan, MT, with photographs, 1930-1971
Box 100 Folder 12	Bridge CC-612, Logan, MT, with photographs, 1927-1967
Box 100 Folder 13	Bridge CC-614, Logan, MT, 1930-1955
Box 100 Folder 14	Culvert CC-615, Janney, MT, 1927
Box 100 Folder 15	Bridge CC-616, Manhattan, MT, 1933-1951
Box 100 Folder 16	Culvert CC-617, Janney, MT, 1925
Box 100 Folder 17	Bridge CC-618, Manhattan, MT, 1931-1969
Box 100 Folder 18	Bridge CC-620, Manhattan, MT, 1930-1969
Box 100 Folder 19	Bridge CC-622, Manhattan, MT, 1930-1955
Box 100 Folder 20	Culvert CC-623, Janney, MT, 1929
Box 100 Folder 21	Bridge CC-626, Belgrade Junction, MT, 1945-1947
Box 100 Folder 22	Culvert CC-629, Janney, MT, 1925
Box 100 Folder 23	Bridge CC-630, Belgrade Junction, MT, 1938
Box 100 Folder 24	Culvert CC-631, Janney, MT, 1929
Box 100 Folder 25	Bridge CC-632, Belgrade Junction, MT, 1932-1959
Box 100 Folder 26	Bridge CC-633, Janney, MT, 1923
Box 100 Folder 27	Bridge CC-634, Belgrade Junction, MT, with photographs, 1943-1953
Box 100 Folder 28	Bridge CC-636, Belgrade, MT, 1912-1971
Box 100 Folder 29	Bridge HCC-637, Janney, MT, 1943
Box 100 Folder 30	Culvert CC-637½, Janney, MT, 1925-1936
Box 100 Folder 31	Bridge CC-638, Belgrade Junction, MT, 1929-1931
Box 100 Folder 32	Culvert CC-639, Newcomb, MT, 1930
Box 100 Folder 33	Bridge CC-640, Holland, MT, 1930-1953
Box 100 Folder 34	Bridge CC-642, Holland, MT, 1929-1931
Box 100 Folder 35	Culvert CC-643, Newcomb, MT, 1923
Box 100 Folder 36	Bridge CC-644, Holland, MT, 1929-1969
Box 100 Folder 37	Culvert CC-645, Newcomb, MT, 1925
Box 100 Folder 38	Bridge CC-646, Holland, MT, 1932-1964
Box 100 Folder 39	Bridge CC-648, Holland, MT, 1930-1966
Box 100 Folder 40	Culvert CC-649½, Newcomb, MT, 1947
Box 100 Folder 41	Bridge CC-650, West Gallatin, MT, 1929-1931
Box 100 Folder 42	Culvert CC-651, Newcomb, MT, 1939
Box 100 Folder 43	Culvert CC-653, Newcomb, MT, 1929
Box 100 Folder 44	Bridge CC-654, Greenwood, MT, with photographs and negatives, 1953-1975
Box 100 Folder 45	Culvert CC-655, Newcomb, MT, 1927
Box 100 Folder 46	Culvert CC-657, Newcomb, MT, 1929
Box 100 Folder 47	Bridge CC-658, Bozeman Hot Springs, MT, 1930-1964
Box 100 Folder 48	Culvert CC-659½, Newcomb, MT, 1948, undated
Box 100 Folder 49	Bridge CC-660, Bozeman Hot Springs, MT, 1943-1953
Box 100 Folder 50	Culvert CC-661, Butte Yard, MT, with photographs, 1936-1947
Box 100 Folder 51	Bridge CC-662, Bozeman Hot Springs, MT, 1929-1946
Box 100 Folder 52	Culvert CC-663, Newcomb, MT, 1923
Box 100 Folder 53	Bridge CC-664, Bozeman Hot Springs, MT, 1933-1966
Box 100 Folder 54	Culvert CC-665, Butte Yard, MT, 1927
Box 100 Folder 55	Bridge CC-666, Blackwood, MT, 1933-1945
Box 100 Folder 56	Culvert CC-667, Newcomb, MT, 1923
Box 100 Folder 57	Bridge CC-668, Blackwood, MT, 1933-1945
Box 100 Folder 58	Culvert CC-669, Newcomb, MT, 1924
Box 100 Folder 59	Bridge CC-670, Bozeman Hot Springs, MT, 1933-1952
Box 100 Folder 60	Culvert CC-671, Colorado Junction, MT, 1923-1949
Box 100 Folder 61	Bridge CC-672, Champion, MT, 1946
Box 100 Folder 62	Culvert CC-673, Colorado Junction, MT, 1923
Box 100 Folder 63	Culvert CC-675, Butte Yard, MT, 1926
Box 100 Folder 64	Culvert CC-675½, Butte Yard, MT, 1948
Box 100 Folder 65	Bridge CC-678, Bozeman, MT, 1947
Box 100 Folder 66	Culvert CC-679, Butte Yard, MT, 1924
Box 100 Folder 67	Bridge CC-680, Bozeman, MT, 1931-1957
Box 100 Folder 68	Bridge CC-682, Bozeman, MT, with photographs and negatives, 1931-1966
Box 100 Folder 69	Culvert CC-683, Butte Yard, MT, 1924
Box 100 Folder 70	Culvert CC-685, Butte Yard, MT, 1929-1948
Box 100 Folder 71	Culvert CC-686, Atkins, MT, 1943
Box 100 Folder 72	Culvert CC-687, Butte, MT, 1926-1930
Box 100 Folder 73	Culvert CC-687¼, Butte, MT, 1939
Box 100 Folder 74	Culvert CC-668, Bozeman Hot Springs, MT, 1943
Box 100 Folder 75	Culvert CC-689, Butte, MT, 1930
Box 100 Folder 76	Culvert CC-689½, Butte, MT, 1924-1925
Box 100 Folder 77	Culvert CC-689½, Butte, MT, 1924
Box 100 Folder 78	Culvert CC-691, Butte, MT, 1927-1948
Box 100 Folder 79	Bridge CC-692, Gallatin Gateway, MT, 1943-1945
Box 100 Folder 80	Culvert CC-693, Butte, MT, 1917-1945
Box 100 Folder 81	Bridge CC-694, Gallatin Gateway, MT, 1932-1948
Box 100 Folder 82	Culvert CC-696, Gallatin Gateway, MT, 1930-1944
Box 100 Folder 83	Culvert CC-697, Butte Yards, MT, 1942
Box 100 Folder 84	Culvert CC-701, Colorado Junction, MT, 1923
Box 100 Folder 85	Culvert CC-703, Butte, MT, 1926
Box 100 Folder 86	Culvert CC-703½, Butte, MT, 1936
Box 100 Folder 87	Culvert CC-705, Colorado Junction, MT, 1925
Box 100 Folder 88	Culvert CC-707, Butte, MT, 1929
Box 100 Folder 89	Culvert CC-709, Butte, MT, 1929
Box 100 Folder 90	Culvert CC-711, Colorado Junction, MT, 1919
Box 100 Folder 91	Culvert CC-713, Colorado Junction, MT, 1923
Box 100 Folder 92	Culvert CC-715, Colorado Junction, MT, 1923-1944
Box 100 Folder 93	Culvert CC-719, Colorado Junction, MT, 1923-1929
Box 100 Folder 94	Culvert CC-721, Alloy, MT, 1929
Box 100 Folder 95	Culvert CC-723, Alloy, MT, 1929
Box 100 Folder 96	Culvert CC-725, Butte, MT, 1929-1940
Box 100 Folder 97	Culvert CC-727, Butte, MT, 1928
Box 100 Folder 98	Culvert CC-729, Colorado Junction, MT, 1925-1946
Box 100 Folder 99	Culvert CC-731, Colorado Junction, MT, 1927-1945
Box 100 Folder 100	Culvert CC-733, Alloy, MT, 1929-1947
Box 100 Folder 101	Culvert CC-735, Butte, MT, 1929-1933
Box 100 Folder 102	Culvert CC-737, Alloy, MT, 1929
Box 100 Folder 103	Culvert CC-739, Alloy, MT, 1929
Box 100 Folder 104	Culvert CC-741½, Nissler, MT, 1943
Box 100 Folder 105	Culvert CC-743, Alloy, MT, 1940
Box 101 Folder 1	Culvert CC-749, Dawson, MT, 1926
Box 101 Folder 2	Culvert CC-751, Dawson, MT, 1929
Box 101 Folder 3	Culvert CC-777, Finlen, MT, 1927
Box 101 Folder 4	Culvert CC-777½, Finlen, MT, 1936-1951
Box 101 Folder 5	Culvert CC-779, Finlen, MT, 1937-1948
Box 101 Folder 6	Culvert CC-781, Finlen, MT, 1931-1935
Box 101 Folder 7	Culvert CC-787, Cullen, MT, 1923
Box 101 Folder 8	Culvert CC-789, Cullen, MT, 1923
Box 101 Folder 9	Culvert CC-791, Cullen, MT, 1923
Box 101 Folder 10	Culvert CC-793, Cullen, MT, 1923
Box 101 Folder 11	Culvert CC-799, Cullen, MT, 1923
Box 101 Folder 12	Culvert CC-801, Cullen, MT, 1924
Box 101 Folder 13	Culvert CC-802, Bozeman, MT, 1931
Box 101 Folder 14	Culvert CC-803, Cullen, MT, 1923
Box 101 Folder 15	Bridge CC-804, Bozeman, MT, 1948-1974
Box 101 Folder 16	Culvert CC-807, Cullen, MT, 1923
Box 101 Folder 17	Bridge CC-806, Bozeman, MT, with photographs and negatives, 1912-1971
Box 101 Folder 18	Bridge CC-808, Bozeman, MT, 1930
Box 101 Folder 19	Culvert CC-809, Cullen, MT, 1927
Box 101 Folder 20	Bridge CC-810, Bozeman, MT, with photographs, 1912-1971
Box 101 Folder 21	Culvert CC-811, Cullen, MT, 1923
Box 101 Folder 22	Bridge CC-812, Bozeman, MT, 1931-1963
Box 101 Folder 23	Bridge CC-814, Bozeman, MT, 1931-1952
Box 101 Folder 24	Culvert CC-815, Cullen, MT, 1923
Box 101 Folder 25	Bridge CC-816, Bozeman, MT, 1929-1953
Box 101 Folder 26	Culvert CC-817, Morel, MT, 1927
Box 101 Folder 27	Bridge CC-818, Bozeman, MT, 1965-1966
Box 101 Folder 28	Bridge CC-820, Bozeman, MT, 1931
Box 101 Folder 29	Culvert CC-821, Morel, MT, 1930
Box 101 Folder 30	Culvert CC-823, Morel, MT, 1927
Box 101 Folder 31	Bridge CC-824, Camona, MT, 1929-1940
Box 101 Folder 32	Culvert CC-824, Camona, MT, 1940
Box 101 Folder 33	Culvert CC-825, Morel, MT, 1920
Box 101 Folder 34	Culvert CC-826, Wiesner, MT, 1929, 1966
Box 101 Folder 35	Culvert CC-827, Morel, MT, 1930
Box 101 Folder 36	Bridge CC-828, Busch, MT, 1940
Box 101 Folder 37	Culvert CC-829, Morel, MT, 1924
Box 101 Folder 38	Bridge CC-830, Spring Hill, MT, 1930
Box 101 Folder 39	Culvert CC-831, Morel, MT, 1928
Box 101 Folder 40	Bridge CC-832, Spring Hill, MT, 1931-1932
Box 101 Folder 41	Culvert CC-833, Morel, MT, 1925
Box 101 Folder 42	Bridge CC-834, Spring Hill, MT, 1931-1932
Box 101 Folder 43	Culvert CC-835, Morel, MT, circa 1925
Box 101 Folder 44	Bridge CC-836, Spring Hill, MT, 1931
Box 101 Folder 45	Culvert CC-839, Morel, MT, 1929-1933
Box 101 Folder 46	Bridge CC-840, Spring Hill, MT, 1931-1932
Box 101 Folder 47	Culvert CC-842, Edilou, MT, 1929-1939
Box 101 Folder 48	Culvert CC-843, Morel, MT, 1924
Box 101 Folder 49	Bridge CC-844, Edilou, MT, 1930-1952
Box 101 Folder 50	Bridge CC-846, Accola, MT, 1930-1952
Box 101 Folder 51	Bridge CC-848, Hillman, MT, 1930
Box 101 Folder 52	Culvert CC-849, Morel, MT, 1923
Box 101 Folder 53	Culvert CC-850, Accola, MT, 1931
Box 101 Folder 54	Culvert CC-851, Morel, MT, circa 1925
Box 101 Folder 55	Bridge CC-852, Accola, MT, 1931-1932
Box 101 Folder 56	Culvert CC-853, Morel, MT, 1923
Box 101 Folder 57	Bridge CC-854, Accola, MT, 1952
Box 101 Folder 58	Culvert CC-855, Morel, MT, 1929
Box 101 Folder 59	Bridge CC-856, Menard, MT, 1931-1932
Box 101 Folder 60	Culvert CC-857, Morel, MT, 1919-1930
Box 101 Folder 61	Bridge CC-858, Accola, MT, 1931-1961
Box 101 Folder 62	Bridge CC-860, Menard, MT, 1931-1933
Box 101 Folder 63	Culvert CC-861, Sinclair, MT, 1924-1971
Box 101 Folder 64	Bridge CC-862, Menard, MT, 1931-1971
Box 101 Folder 65	Culvert CC-863, Morel, MT, 1929
Box 101 Folder 66	Culvert CC-863½, Sinclair, MT, 1925-1945
Box 101 Folder 67	Bridge CC-864, Menard, MT, 1933
Box 101 Folder 68	Culvert HCC-864, Menard, MT, 1939
Box 101 Folder 69	Bridge HCC-865, Sinclair, MT, 1939
Box 101 Folder 70	Bridge CC-866, Menard, MT, 1929-1932
Box 101 Folder 71	Culvert CC-867, Champion, MT, 1929-1938
Box 101 Folder 72	Culvert CC-871, Sinclair, MT, 1923
Box 101 Folder 73	Culvert CC-873, Champion, MT, 1932
Box 101 Folder 74	Culvert CC-875, Champion, MT, 1929
Box 101 Folder 75	Culvert CC-877, Champion, MT, 1930-1950
Box 101 Folder 76	Culvert CC-881, Sinclair, MT, 1924
Box 101 Folder 77	Culvert CC-883, Champion, MT, 1930
Box 101 Folder 78	Culvert CC-885, Champion, MT, 1929
Box 101 Folder 79	Culvert CC-887, Champion, MT, 1944
Box 101 Folder 80	Culvert CC-889, Champion, MT, 1944
Box 101 Folder 81	Culvert CC-891, Sinclair, MT, 1919-1933
Box 101 Folder 82	Culvert CC-893, Sinclair, MT, 1931-1946
Box 101 Folder 83	Culvert CC-895, Sinclair, MT, 1930-1942
Box 101 Folder 84	Culvert CC-899, Sinclair, MT, 1919-1947
Box 101 Folder 85	Culvert CC-901, Sinclair, MT, 1919-1930
Box 101 Folder 86	Culvert CC-903, Sinclair, MT, 1923-1945
Box 101 Folder 87	Culvert CC-907, Sinclair, MT, 1924-1934
Box 101 Folder 88	Culvert CC-911, Sinclair, MT, 1923
Box 101 Folder 89	Culvert CC-913, Sinclair, MT, 1930
Box 101 Folder 90	Culvert CC-917, Sinclair, MT, 1936
Box 101 Folder 91	Culvert CC-921, Sinclair, MT, 1925-1948
Box 101 Folder 92	Bridge HCC-923, Sinclair, MT, 1939, 1947
Box 101 Folder 93	Highway Bridge, 0.5 miles West of Sinclair, MT, 1933
Box 101 Folder 94	Culvert CC-925½, Sinclair, MT, 1930-1941
Box 101 Folder 95	Bridge HCC-925½, Sinclair, MT, 1943
Box 101 Folder 96	Culvert CC-927, Sinclair, MT, 1936
Box 101 Folder 97	Culvert CC-933, Sinclair, MT, 1924
Box 101 Folder 98	Culvert CC-935, Sinclair, MT, 1923-1937
Box 101 Folder 99	Culvert CC-941, Sinclair, MT, 1923
Box 101 Folder 100	Culvert CC-943, Deer Lodge, MT, 1929-1962
Box 101 Folder 101	Culvert CC-945, Deer Lodge, MT, 1919
Box 101 Folder 102	Culverts CC-947 and CC-949, Deer Lodge, MT, 1923
Box 101 Folder 103	Culvert CC-957, Deer Lodge, MT, 1923
Box 101 Folder 104	Culvert CC-959, Deer Lodge, MT, 1926
Box 101 Folder 105	Culvert CC-961, Deer Lodge, MT, 1929-1934
Box 101 Folder 106	Culvert CC-1201, Three Forks, MT, circa 1925
Box 101 Folder 107	Culvert HCC-1203, Three Forks, MT, 1927-1943
Box 101 Folder 108	Culverts CC-1205 and CC-1207, Three Forks, MT, 1928-1929
Box 101 Folder 109	Culvert CC-1209, Carpenter, MT, 1930
Box 101 Folder 110	Culverts CC-1215, CC-1217, CC-1219, Carpenter, MT, 1927-1928
Box 101 Folder 111	Culvert CC-1221, Carpenter, MT, 1928
Box 101 Folder 112	Culverts CC-1223, CC-1231, Logan, MT, 1925, 1927
Box 101 Folder 113	Culverts CC-CC-1235, CC-1239, CC-1241, Logan, MT, 1934-1940
Box 101 Folder 114	Culvert CC-1243, Manhattan, MT, 1926-1941
Box 101 Folder 115	Culverts CC-1253, CC-1255, CC-1261, CC-1263, Manhattan, MT, 1919-1945
Box 101 Folder 116	Culverts CC-1267, CC-1269, CC-1271, CC-1273, Manhattan, MT, 1929-1957
Box 101 Folder 117	Culverts CC-1275, CC-1277, CC-1279, CC-1281, Manhattan, MT, 1925-1940
Box 101 Folder 118	Culvert CC-1283½, Manhattan, MT, 1949-1967
Box 101 Folder 119	Culvert CC-1285, Manhattan, MT, 1929-1945
Box 101 Folder 120	Bridge HCC-1297 A and B, Manhattan, MT, 1936-1958
Box 101 Folder 121	Culvert CC-1301½, Manhattan, MT, 1929-1971
Box 101 Folder 122	Culvert CC-1307, Manhattan, MT, with photographs, 1965-1971
Box 101 Folder 123	Culvert CC-1309, Manhattan, MT, 1947-1948
Box 101 Folder 124	Culverts CC-1311, CC-1313, CC-1317, CC-1321, CC-1325, CC-1327, Manhattan, MT, 1927-1939
Box 101 Folder 125	Culverts CC-1331, CC-1335, CC-1337, CC-1339, CC-1341, Camp Creek, MT, 1926-1941
Box 101 Folder 126	Culverts CC-1343, CC-1345, CC-1347, CC-1349, Camp Creek, MT, 1929-1947
Box 101 Folder 127	Culverts CC-1349, CC-1355, CC-1357, CC-1361, Belgrade Junction, MT, 1924-1966
Box 101 Folder 128	Culverts CC-1363, CC-1365, CC-1367, CC-1369, CC-1371, Belgrade Junction, MT, 1926-1946
Box 101 Folder 129	Culverts CC-1373, CC-1375½, CC-1377, CC-1379, CC-1381, Belgrade Junction, MT, 1926-1945
Box 101 Folder 130	Culverts HCC-1381, CC-1383, CC-1385, CC-1387, CC-1423, CC-1389, Belgrade Junction, MT, 1927-1936
Box 101 Folder 131	Culverts CC-1391, HCC-1391 N, CC-1393, CC-1395, CC-1397, CC-1399, Belgrade Junction, MT, 1928-1946
Box 101 Folder 132	Culverts CC-1401, CC-1403, CC-1405, CC-1405½, CC-1407, CC-1409, Belgrade Junction, MT, 1925-1946
Box 101 Folder 133	Culverts CC-1411, CC-1415, CC-1421, CC-1423, CC-1425, CC-1427, CC-1431, CC-1441, CC-1445, Belgrade Junction, MT, 1924-1946
Box 101 Folder 134	Culverts HCC-1447, CC-1453, CC-1459, Holland, MT, 1929-1945
Box 101 Folder 135	Culverts CC-1467, CC-1475, CC-1479, CC-1481, CC-1481½, West Gallatin, MT, 1925-1945
Box 101 Folder 136	Culverts CC-1485, HCC-1487 N, CC-1493, Greenwood, MT, 1924-1946
Box 101 Folder 137	Culverts CC-1493, CC-1501½, CC-1505, CC-1515, CC-1521, Bozeman, Hot Springs, MT, 1924-1934
Box 101 Folder 138	Bridge HCC-1523, Bozeman Hot Springs, MT, 1958-1963
Box 102 Folder 1	Culverts CC-1525, CC-1525½, CC-1527½, CC-1529, CC-1529½, Bozeman Hot Springs, MT, 1923-1930
Box 102 Folder 2	Bridge CC-15233, Gilroy, MT, 1929
Box 102 Folder 3	Culverts CC-1535, CC-1537, CC-1539, Blackwood, MT, 1923-1943
Box 102 Folder 4	Culverts CC-1541, CC-1543, CC-1545, CC-1547, Potter, MT, 1929-1943
Box 102 Folder 5	Culverts CC-1547, CC-1549, CC-1551, CC-1553, CC-1555, CC-1557, CC-1559, Chapman, MT, 1924-1949
Box 102 Folder 6	Culverts CC-1565, CC-1567, CC-1569, CC-1571, CC-1573, CC-1575, HCC-1575 A and B, CC-1579, CC-1581, CC-1583, CC-1585, CC-1587, Balmont, MT, 1923-1938
Box 102 Folder 7	Culverts CC-1589, CC-1591, CC-1595, CC-1597, CC-1599, CC-1593, CC-1601, CC-1603, CC-1605, Matthews, MT, 1924-1945
Box 102 Folder 8	Culverts CC-1607, CC-1609, CC-1611, CC-1613, CC-1615, CC-1617, CC-1619, CC-1621, CC-1627, HCC-1629, CC-1631, CC-1633, CC-1635, Patterson, MT, 1924-1957
Box 102 Folder 9	Culvert CC-1639, Patterson, MT, with photographs, 1949-1950
Box 102 Folder 10	Culverts CC-1643, CC-1649½, CC-1651, CC-1657 A and B, Bozeman, MT, 1924-1940
Box 102 Folder 11	Bridge CC-1661, Bozeman, MT, 1945-1946
Box 102 Folder 12	Culverts CC-1663, CC-1665, CC-1667, CC-1673, CC-1675, CC-1685, Bozeman, MT, 1923-1932
Box 102 Folder 13	Culverts CC-1693, CC-1697, CC-1699, Bozeman Hot Springs, MT, 1924-1948
Box 102 Folder 14	Culverts CC-1703, CC-1705, CC-1711, CC-1713, Atkins, MT, 1930-1942, undated
Box 102 Folder 15	Culvert CC-1709, Gallatin Gateway, MT, 1938-1946
Box 102 Folder 16	Culverts CC-1713½, CC-1715, CC-1723, CC-1729, CC-1733, CC-1745, CC-1751, CC-1755, Salesville, MT, 1919-1940
Box 102 Folder 17	Culverts CC-1725, CC-1735, CC-1737, CC-1743, CC-1747, CC-1749, CC-1765, Gallatin Gateway, MT, 1928-1940
Box 102 Folder 18	Culvert CC-1765, Gallatin Gateway Inn, MT, 1933
Box 102 Folder 19	Culverts CC-1801⅜, CC-1803, CC-1805, CC-1831, CC-1839, Bozeman, MT, 1925-1936
Box 102 Folder 20	Bridge CC-1835½, Bozeman Mill, MT, 1928-1955
Box 102 Folder 21	Culverts CC-1809, CC-1813, CC-1821, CC-1827, CC-1843, CC-1845, Bozeman Mill, MT, 1927-1951
Box 102 Folder 22	Culverts CC-1823, CC-1849, CC-1849½, CC-1855, CC-1859, Lux, MT, 1927-1943
Box 102 Folder 23	Culverts CC-1857, CC-1861, CC-1867, CC-1869, Camona, MT, 1926-1937
Box 102 Folder 24	Culvert CC-1885, Wiesner, MT, 1927
Box 102 Folder 25	Culvert CC-1891, CC-1897, CC-1901, CC-1907½, Busch, MT, 1927-1946
Box 102 Folder 26	Culverts HCC-1919½, HCC-1921, HCC-1919¼, HCC-1923, HCC-1929, Spring Hill, MT, 1926-1948
Box 102 Folder 27	Culverts CC-1929, CC-1931, CC-1933, CC-1935, Spring Hill, MT, 1927-1940
Box 102 Folder 28	Culvert CC-1937, Erlice, MT, 1929-1936
Box 102 Folder 29	Culverts CC-1945, CC-1947, CC-1951, CC-1961, CC-1963, Huffine, MT, 1927-1939
Box 102 Folder 30	Culvert CC-1959 and HCC-1965, Torbet, MT, 1923-1940
Box 102 Folder 31	Culverts CC-1967, CC-1973, CC-1977½, CC-1979, CC-1981, Edilou, MT, 1929-1960
Box 102 Folder 32	Culverts CC-1997, CC-1985, CC-1989, CC-1991, CC-1993, CC-1999, CC-2001, CC-2007, CC-2013, Hillman, MT, 1927-1943
Box 102 Folder 33	Culvert CC-1987, Hillman, MT, with photographs, 1942-1950
Box 102 Folder 34	Culverts CC-2015, CC-2017, CC-2019, CC-2021, CC-2027, CC-2029, Accola, MT, 1927-1946
Box 102 Folder 35	Culverts CC-2035 and CC-2039, Menard, MT, 1930
Box 102 Folder 36	Culvert DD-1, Unknown, MT, with photographs, 1922-1952, undated
Box 102 Folder 37-38	Bridge DD-2, Deer Lodge, MT, with photographs, 1942-1962
Box 102 Folder 39	Road Bridge North of Hill Track at Deer Lodge, MT, 1937
Box 102 Folder 40	Bridge DD-4 and Tunnel 4, Unknown, MT, with photographs and negatives, 1943-1959
Box 102 Folder 41	Bridge DD-6, Deer Lodge, MT, 1914-1971
Box 102 Folder 42	Culvert DD-7, Deer Lodge, MT, 1928
Box 102 Folder 43	Bridge DD-8, Kohrs, MT, 1929
Box 102 Folder 44	Culvert DD-9, Deer Lodge, MT, with photographs, 1914-1963
Box 102 Folder 45	Bridge DD-10, Kohrs, MT, 1935-1943
Box 102 Folder 46	Culvert DD-11, Deer Lodge, MT, 1926
Box 102 Folder 47	Bridge DD-12, Kohrs, MT, 1940-1950
Box 102 Folder 48	Culvert DD-13, Deer Lodge, MT, 1923-1937
Box 102 Folder 49	Bridge DD-14, Garrison, MT, 1914-1942
Box 102 Folder 50	Bridge DD-16, Garrison, MT, 1916-1971
Box 102 Folder 51	Culvert DD-17, Deer Lodge, MT, 1920-1927
Box 102 Folder 52	Bridge DD-18, Garrison, MT, 1929-1978
Box 102 Folder 53	Culvert DD-19, Deer Lodge, MT, 1927
Box 102 Folder 54	Bridge DD-20, Garrison, MT, 1940-1975
Box 102 Folder 55	Bridge HDD-20, Garrison, MT, 1943
Box 102 Folder 56	Bridge DD-20½, Garrison, MT, 1939
Box 102 Folder 57	Bridge DD-22, Garrison, MT, with photographs, 1933-1959
Box 102 Folder 58	Bridge DD-24, Gold Creek, MT, 1944-1959
Box 102 Folder 59	Bridge DD-26, Gold Creek, MT, 1916-1948
Box 102 Folder 60	Bridge DD-28, Gold Creek, MT, 1929-1975
Box 102 Folder 61	Culvert DD-29, Kohrs, MT, 1924
Box 102 Folder 62	Culvert DD-31, Kohrs, MT, 1925
Box 102 Folder 63	Bridge DD-30, Gold Creek, MT, with photographs and negatives, 1908-1971
Box 102 Folder 64	Bridge DD-32, Haskell, MT, 1942-1983
Box 102 Folder 65	Bridge DD-34, Gold Creek, MT, 1942-1943
Box 102 Folder 66	Bridge DD-36, Haskell, MT, 1929-1938
Box 102 Folder 67	Culvert DD-37, Kohrs, MT, 1924
Box 102 Folder 68	Farm Crossing Bridge, Drummond, MT, 1936
Box 102 Folder 69	Bridge DD-38, Drummond, MT, 1936-1937
Box 102 Folder 70	Culvert DD-39, Kohrs, MT, 1939
Box 102 Folder 71	Culvert DD-40, Drummond, MT, 1923-1954
Box 102 Folder 72	Culvert DD-41, Kohrs, MT, 1927
Box 102 Folder 73	Bridge DD-42, Drummond, MT, 1929-1975
Box 102 Folder 74	Culvert DD-43, Kohrs, MT, 1931-1945
Box 102 Folder 75	Bridge DD-44, Drummond, MT, with photographs and negatives, 1908-1971
Box 102 Folder 76	Bridge DD-46, Drummond, MT, with photographs and negatives, 1910-1971
Box 102 Folder 77	Culvert DD-47½, Garrison, MT, 1940-1942
Box 102 Folder 78	Bridge DD-48, Drummond, MT, 1932-1956
Box 102 Folder 79	Culvert DD-49, Garrison, MT, 1939-1947
Box 102 Folder 80	Bridge DD-50, Bearmouth, MT, 1930-1948
Box 102 Folder 81	Culvert DD-51, Garrison, MT, 1927
Box 102 Folder 82	Culvert DD-51½, Garrison, MT, 1949
Box 102 Folder 83-84	Bridge DD-52, Bearmouth, MT, with photographs, 1917-1977, undated
Box 103 Folder 1	Culvert DD-53, Garrison, MT, 1927
Box 103 Folder 2	Bridge DD-54, Bearmouth, MT, 1929
Box 103 Folder 3	Bridge HDD-54½, Bearmouth, MT, 1947-1959
Box 103 Folder 4	Bridge DD-56, Ravenna, MT, 1908-1971
Box 103 Folder 5	Bridge DD-58, Ravenna, MT, with negatives, 1909-1956
Box 103 Folder 6-7	Bridge DD-60, Ravenna, MT, with photographs and negatives, 1908-1971
Box 103 Folder 8	Bridge DD-62, Iris, MT, 1941-1944
Box 103 Folder 9	Culvert DD-63, Gold Creek, MT, 1930-1947
Box 103 Folder 10	Bridge DD-64, Clinton, MT, 1944-1946
Box 103 Folder 11	Bridge HDD-64, Clinton, MT, 1939-1958
Box 103 Folder 12	Culvert DD-65, Gold Creek, MT, 1919-1936
Box 103 Folder 13-14	Bridge DD-66, Thelma, MT, with photographs and negatives, 1908-1978
Box 103 Folder 15	Bridge DD-68, Thelma, MT, 1930, undated
Box 103 Folder 16	Culvert DD-69, Gold Creek, MT, 1926
Box 103 Folder 17	Bridge DD-70, Bonner Junction, MT, 1930
Box 103 Folder 18	Culvert DD-73, Haskell, MT, 1930
Box 103 Folder 19	Bridge DD-74, Missoula, MT, 1920-1941
Box 103 Folder 20-21	Bridge DD-74½, Missoula, MT, 1908-1931
Box 103 Folder 22	Bridge DD-74⅔, Missoula, MT, 1923-1931
Box 103 Folder 23	Culvert DD-76, Missoula, MT, 1919-1978
Box 103 Folder 24	Bridge DD-76½, Missoula, MT, 1945-1946
Box 103 Folder 25	Bridge DD-78, Missoula, MT, 1952-1966
Box 103 Folder 26-27	Bridge DD-78⅔, Missoula, MT, with photographs of wood, 1944-1979
Box 103 Folder 28	Bridge HDD-78.937, Missoula, MT, 1980
Box 103 Folder 29	Bridge DD-80, Missoula, MT, with photographs and negatives, 1950-1971
Box 103 Folder 30	Bridge DD-82 A, Missoula, MT, 1920-1971
Box 103 Folder 31-32	Bridge DD-82 B, Missoula, MT, with photographs, 1948-1978
Box 104 Folder 1	Culvert DD-83, Haskell, MT, 1922-1936
Box 104 Folder 2	Culvert DD-85, Haskell, MT, 1934
Box 104 Folder 3	Bridge DD-88, Missoula, MT, 1931-1935
Box 104 Folder 4	Bridge DD-90, Missoula, MT, 1930-1945
Box 104 Folder 5	Culvert DD-91, Haskell, MT, 1931
Box 104 Folder 6	Bridge DD-92, Missoula, MT, 1932-1943
Box 104 Folder 7	Bridge DD-94, Missoula, MT, 1929-1941
Box 104 Folder 8	Culvert DD-95, Haskell, MT, 1929-1958
Box 104 Folder 9	Bridge DD-96, Primrose, MT, 1930-1957
Box 104 Folder 10	Culvert DD-97, Haskell, MT, 1924-1958
Box 104 Folder 11	Bridge DD-98, Primrose, MT, 1912-1930
Box 104 Folder 12	Bridge DD-100, Primrose, MT, 1929-1934
Box 104 Folder 13	Culvert DD-101, Haskell, MT, 1925
Box 104 Folder 14	Bridge DD-102, Primrose, MT, 1934-1971
Box 104 Folder 15	Culvert DD-103, Haskell, MT, 1952-1957
Box 104 Folder 16	Bridge DD-104, Primrose, MT, 1939-1948
Box 104 Folder 17	Culvert DD-105, Haskell, MT, 1923-1958
Box 104 Folder 18	Bridge DD-106, Missoula, MT, 1934-1967
Box 104 Folder 19	Bridge DD-108, Unknown, MT, 1912
Box 104 Folder 20	Culvert DD-109, Haskell, MT, 1923-1933
Box 104 Folder 21	Bridge HDD-109 A, Drummond, MT, 1933-1958
Box 104 Folder 22	Culvert DD-111, Drummond, MT, 1925-1942
Box 104 Folder 23	Bridge DD-112, Missoula, MT, with photographs and negatives, 1929-1967
Box 104 Folder 24	Bridge HDD-113, Drummond, MT, 1940
Box 104 Folder 25	Bridge HDD-115, Drummond, MT, 1955
Box 104 Folder 26	Bridge DD-116, Primrose, MT, 1930-1948
Box 104 Folder 27	Bridge DD-118, Primrose, MT, 1930-1950
Box 104 Folder 28	Bridge DD-120, Primrose, MT, 1920-1930
Box 104 Folder 29	Culvert DD-121, Drummond, MT, 1919-1925
Box 104 Folder 30	Bridge DD-122, Primrose, MT, 1932-1940
Box 104 Folder 31	Culvert DD-123, Drummond, MT, 1925
Box 104 Folder 32	Bridge DD-124, Frenchtown, MT, 1930-1944
Box 104 Folder 33	Culvert DD-125, Drummond, MT, 1923
Box 104 Folder 34	Bridge DD-126, Frenchtown, MT, 1931-1944
Box 104 Folder 35	Bridge DD-128, Huson, MT, 1930
Box 104 Folder 36	Culvert DD-129, Drummond, MT, 1926-1930
Box 104 Folder 37	Bridge HDD-129 S, Drummond, MT, 1936-1958
Box 104 Folder 38	Bridge HDD-129 N, Drummond, MT, 1943-1958
Box 104 Folder 39	Bridge DD-130, Huson, MT, 1929-1930
Box 104 Folder 40	Culvert DD-133½, Drummond, MT, 1936-1945
Box 104 Folder 41	Bridge DD-134, Soudan, MT, with photographs, 1914-1971
Box 104 Folder 42	Culvert DD-135, Drummond, MT, 1924
Box 104 Folder 43	Bridge DD-136, Soudan, MT, 1926-1954
Box 104 Folder 44	Bridge DD-138½, Alberton, MT, 1932-1971
Box 104 Folder 45	Bridge DD-140, Alberton, MT, with photographs and negatives, 1945-1971
Box 104 Folder 46	Culvert DD-141, Drummond, MT, 1923
Box 104 Folder 47	Bridge DD-142, Cyr, MT, 1909-1971
Box 104 Folder 48-49	Bridge DD-144, Cyr, MT, with negative, 1908-1971
Box 104 Folder 50	Culvert DD-533½, Tarkio, MT, 1924-1945
Box 104 Folder 51	Bridge DD-146, Tarkio, MT, 1916-1971
Box 104 Folder 52	Bridge DD-146½, Tarkio, MT, with photographs of concrete, 1924-1971
Box 104 Folder 53	Culvert DD-148, Cobden, MT, with photographs, 1919-1952
Box 104 Folder 54	Culvert DD-150, Cobden, MT, with photograph, 1952, undated
Box 104 Folder 55	Culvert DD-152, Cobden, MT, with photographs, 1952, undated
Box 104 Folder 56	Bridge DD-154 A, Cobden, MT, with photograph, 1931-1952
Box 104 Folder 57	Bridge DD-156m, Cobden, MT, 1930-1953
Box 104 Folder 58	Bridge DD-156½, Superior, MT, 1930-1971
Box 105 Folder 1	Culvert DD-157, Ozan, MT, 1923
Box 105 Folder 2	Bridge DD-158, Unknown, MT, 1952, undated
Box 105 Folder 3	Culvert DD-159, Ozan, MT, 1927
Box 105 Folder 4	Bridge DD-162, Superior, MT, 1934-1972, undated
Box 105 Folder 5	Bridge DD-162 B, Superior, MT, 1934-1937
Box 105 Folder 6	Bridge DD-162½, Superior, MT, 1928-1971
Box 105 Folder 7	Bridge DD-164, Superior, MT, with photographs and negatives, 1913-1959
Box 105 Folder 8	Bridge DD-166, Superior, MT, with photographs and negatives, 1914-1961
Box 105 Folder 9	Bridge DD-168, Ashmore, MT, 1930-1949
Box 105 Folder 10	Bridge DD-168½, Bonner, MT, 1909-1935
Box 105 Folder 11	Bridge DD-170, St. Regis, MT, with photographs, 1920-1970
Box 105 Folder 12	Culvert DD-173, Bearmouth, MT, 1926
Box 105 Folder 13	Bridge DD-174, St. Regis, MT, 1937-1971
Box 105 Folder 14	Culvert DD-175¾, Lennep, MT, 1947
Box 105 Folder 15	Bridge DD-176, Foraker, MT, 1926-1937
Box 105 Folder 16	Culvert DD-177, Bearmouth, MT, 1929
Box 105 Folder 17	Bridge DD-178, Drexel, MT, 1932-1936
Box 105 Folder 18	Bridge DD-180, Missoula, MT, 1935-1955
Box 105 Folder 19	Bridge DD-182, Henderson, MT, 1951-1971
Box 105 Folder 20	Bridges DD-182 and DD-186, Henderson, MT, with photographs, 1927-1939
Box 105 Folder 21	Bridge DD-184, DeBorgia, MT, 1929-1950
Box 105 Folder 22	Culvert DD-185, Bearmouth, MT, 1924
Box 105 Folder 23	Bridge DD-186, Haugan, MT, 1908-1971
Box 105 Folder 24	Culvert DD-187, Bearmouth, MT, 1924-1925
Box 105 Folder 25	Bridge DD-188, Haugan, MT, with photographs and negatives, 1944-1971
Box 105 Folder 26	Culvert DD-189, Bearmouth, MT, 1924-1925
Box 105 Folder 27	Bridge DD-190, Saltese, MT, 1912-1971
Box 105 Folder 28	Culvert DD-191, Ravenna, MT, 1926
Box 105 Folder 29	Culvert DD-192, Bryson, MT, with photographs and negatives, 1957
Box 105 Folder 30	Culvert DD-193, Ravenna, MT, 1929
Box 105 Folder 31	Culvert DD-195, Ravenna, MT, 1929
Box 105 Folder 32	Slide Bridge, Bryson, MT, 1943-1944
Box 105 Folder 33	Culvert DD-196, Bryson, MT, with photographs, 1915-1970
Box 105 Folder 34	Culvert DD-197, Ravenna, MT, 1924
Box 105 Folder 35	Bridge DD-198, Bryson, MT, 1941-1971
Box 105 Folder 36	Culvert DD-199, Ravenna, MT, 1926
Box 105 Folder 37	Culvert DD-200, Bryson, MT, 1926
Box 105 Folder 38	Culvert DD-201, Ravenna, MT, 1929
Box 105 Folder 39	Culvert DD-205, Ravenna, MT, 1924
Box 105 Folder 40	Culvert DD-207, Ravenna, MT, 1924
Box 105 Folder 41	Bridge DD-208, Roland, ID, with photographs and negatives, 1952-1953
Box 105 Folder 42	Culvert DD-209, Ravenna, MT, 1923
Box 105 Folder 43	Culvert DD-211, Ravenna, MT, 1926
Box 105 Folder 44	Culvert DD-213, Ravenna, MT, 1923
Box 105 Folder 45	Culvert DD-213½, Ravenna, MT, 1928
Box 105 Folder 46	Culvert DD-215, Iris, MT, 1924
Box 105 Folder 47	Bridge DD-216, Adair, MT, 1911-1971
Box 106 Folder 1	Bridge DD-218, Adair, MT, with photographs and negatives, 1959-1971
Box 106 Folder 3	Culvert DD-217, Iris, MT, 1952-1960
Box 106 Folder 4	Culvert DD-219, Ravenna, MT, 1923-1937
Box 106 Folder 5-7	Bridge DD-220, Adair, ID, with photographs, 1908-1971
Box 106 Folder 8	Culvert DD-221, Iris, MT, 1923
Box 106 Folder 9	Culvert DD-222, Adair, ID, 1923-1950
Box 106 Folder 10	Culvert DD-223, Iris, MT, 1923
Box 106 Folder 11	Bridge DD-224, Adair, ID, with photographs and negatives, 1941-1971
Box 106 Folder 12	Bridge DD-226, Adair, ID, with photographs and negatives, 1909-1971
Box 106 Folder 13	Culvert DD-227, Iris, MT, 1923
Box 106 Folder 14	Bridge DD-228, Falcon, ID, with photographs and negatives, 1941-1971
Box 106 Folder 15	Culvert DD-229, Iris, MT, 1923
Box 106 Folder 16-18	Bridge DD-230, Falcon, ID, with photographs, 1908-1952
Box 107 Folder 1	Culvert DD-231, Iris, MT, 1923, 1953
Box 107 Folder 2	Culvert DD-233, Iris, MT, 1921, 1927
Box 107 Folder 3	Culvert DD-235, Iris, MT, 1927
Box 107 Folder 4	Culvert DD-237, Unknown, MT, 1952, undated
Box 107 Folder 5	Culvert DD-239, Iris, MT, 1924
Box 107 Folder 6	Culvert DD-241, Clinton, MT, 1923-1931
Box 107 Folder 7	Culvert DD-243, Clinton, MT, 1923
Box 107 Folder 8	Culvert DD-244, Falcon, ID, with photographs, 1969-1970
Box 107 Folder 9	Culvert DD-249, Clinton, MT, 1923
Box 107 Folder 10	Bridge DD-250, Kyle, MT, with photographs, 1937-1971
Box 107 Folder 11	Culvert DD-251, Clinton, MT, 1923
Box 107 Folder 12	Bridge DD-252, Kyle, ID, 1933
Box 107 Folder 13	Culvert DD-253, Clinton, MT, 1924
Box 107 Folder 14	Bridge DD-254, Stetson, MT, with photographs and negatives, 1909-1971
Box 107 Folder 15	Culvert DD-255, Clinton, MT, 1926
Box 107 Folder 16	Bridge DD-256, Avery, ID, 1915-1932
Box 107 Folder 17	Culvert DD-257, Clinton, MT, 1923-1969
Box 107 Folder 18	Bridge HDD-257, Clinton, MT, 1958
Box 107 Folder 19	Bridge DD-256½, Avery, ID, 1947-1949
Box 107 Folder 20	Culvert DD-261, Clinton, MT, 1923
Box 107 Folder 21	Culvert DD-261½, Clinton, MT, 1921
Box 107 Folder 22	Culvert DD-261¼, Clinton, MT, 1924-1944
Box 107 Folder 23	Culvert DD-263, Thelma, MT, 1923
Box 107 Folder 24	Culvert DD-267, Thelma, MT, 1923
Box 107 Folder 25	Culvert DD-269, Thelma, MT, 1923
Box 107 Folder 26	Culverts DD-273, DD-275, DD-279½, Thelma, MT, 1923-1958
Box 107 Folder 27	Culverts DD0277, DD-279, DD-281, DD-283, DD-285, DD-287, DD-289, DD-291, DD-301, DD-293, Bonner Junction, MT, 1923-1927
Box 107 Folder 28	Bridge DD-295, Neal, MT, 1927
Box 107 Folder 29	Culvert DD-297, Missoula, MT, 1919-1940
Box 107 Folder 30	Bridge DD-302, Bonner Junction, MT, 1909-1949
Box 107 Folder 31	Bridge DD-306½, Bonner, MT, 1928-1949
Box 107 Folder 32	Culvert DD-303, DD-310, DD-316, Bonner, MT, 1923-1941
Box 107 Folder 33	Culverts DD-305, DD-307, DD-309, DD-311, DD-313, DD-317, Missoula, MT, 1923-1928
Box 107 Folder 34	Bridges DD-312 and DD-314, Blackfoot Junction, MT, 1926, undated
Box 107 Folder 35	Bridge 313, Missoula, MT, with photographs, 1916-1964
Box 107 Folder 36	Bridges DD-326, DD-328, DD-338, DD-340, McNamara, MT, 1930-1962
Box 107 Folder 37	Bridges DD-318, DD-320, DD-330, DD-332, DD-334, DD-336, DD-342, DD-344, Bonner Junction, MT, 1927-1953
Box 107 Folder 38	Culverts DD-319, DD-321, DD-325, DD-329, DD-331, DD-333, DD-337, DD-347, DD-349½, DD-353, Missoula, MT, 1926-1936
Box 107 Folder 39	Bridge DD-325, Missoula, MT, 1928
Box 107 Folder 40	Culvert DD-350, DD-354, DD-356, DD-358, DD-360, DD-364, DD-370, Sunset, MT, 1943-1955
Box 107 Folder 41	Bridges DD-362 and DD-366, Sunset, MT, 1944
Box 107 Folder 42	Culverts DD-362, DD-365, DD-367, DD-369, DD-371, DD-373, DD-375, DD-377, DD-379, DD-381, DD-383, DD-385, DD-387, DD-389, DD-389½, DD-393, Primrose, MT, 1919-1936
Box 107 Folder 43	Culvert DD-368, DD-372, DD-374, Clearwater, MT, 1943-1945
Box 107 Folder 44	Bridges DD-376 and DD-378, Clearwater, MT, 1945-1966
Box 107 Folder 45	Culverts DD-393¾, DD-395, DD-397, DD-399, DD-401, DD-403, DD-405, DD-405½, DD-407, DD-407½, DD-409, DD-411, DD-413, DD-415, Frenchtown, MT, 1923-1936
Box 107 Folder 46	Culverts DD-417, DD-419, DD-425, DD-427, DD-431, DD-433, DD-435, DD-437, DD-439, Huson, MT, 1923-1926
Box 107 Folder 47	Culverts DD-441, DD-445, DD-451, Soudan, MT, 1924-1928
Box 107 Folder 48	Culverts DD-463, DD-465, DD-467, DD-469, DD-471, DD-479, DD-481, DD-491, Alberton, MT, 1925-1936
Box 107 Folder 49	Culvert DD-509, Cyr, MT, 1923-1959
Box 107 Folder 50	Culverts DD-535, DD-535½, DD-537, DD-539, DD-541, DD-541½, DD-543, DD-545, DD-547, Tarkio, MT, 1923-1940
Box 107 Folder 51	Culverts DD-549, DD-553, DD-555, DD-559, DD-561, DD-565, Cobden, MT, 1923-1939
Box 107 Folder 52	Culverts DD-569, DD-571, DD-573, DD-575, DD-577, DD-581, DD-583, DD-587, DD-589, DD-591, DD-593, DD-595, Superior, MT, 1923-1934
Box 107 Folder 53	Culverts DD-597, DD-599, DD-605, DD-607, DD-609, Ashmore, MT, 1923-1924
Box 107 Folder 54	Culverts DD-613, DD-621, DD-621⅞, DD-621¾, DD-623, DD-627, DD-629, DD-637, DD-641, St. Regis, MT, 1924-1959
Box 107 Folder 55	Culverts DD-635, DD-639, DD-643, DD-647, Foraker, MT, 1926-1955
Box 107 Folder 56	Culverts DD-647⅜, DD-647¼, DD-651, Drexel, MT, 1924-1958
Box 107 Folder 57	Culverts DD-653¾, DD-653⅝, DD-655, DD-659, DD-661, Henderson, MT, 1924-1958
Box 107 Folder 58	Culvert DD-661½, DD-663, DD-665, DD-667, DeBorgia, MT, 1924-1940
Box 107 Folder 59	Culvert DD-669¼, DD-671, DD-673½, DD-675, DD-669, DD-669⅛, Haugan, MT, 1924-1936
Box 107 Folder 60	Culverts DD-677, DD-681, DD-683, DD-685, DD-687, DD-691½, DD-693, DD-703, Saltese, MT, 1923-1957
Box 107 Folder 61	Bridge DD-689, Saltese, MT, 1937-1938
Box 107 Folder 62	Bridge DD-693 and Mine Tunnel, Saltese, MT, 1925-1949
Box 107 Folder 63	Culvert DD-705, DD-709, DD-711, DD-713, DD-713, Bryson, MT, 1923-1939
Box 107 Folder 64	Culverts DD-717½, DD-721, DD-723, DD-727, East Portal, MT, with photographs of DD-727, 1926-1969
Box 107 Folder 65	Bridge DD-729¾, Roland, MT, 1940-1942
Box 108 Folder 1	Bridge DD-731, Adair, ID, with photographs, 1920-1976
Box 108 Folder 2	Culvert DD-731½, Adair, ID, 1930
Box 108 Folder 3	Culvert DD-733, DD-735, DD-737, DD-739, DD-743, DD-745, Falcon, ID, 1924-1944
Box 108 Folder 4	Culvert DD-747, Falcon, ID, with photographs, 1925, 1970
Box 108 Folder 5	Culvert DD-751, DD-753, DD-767, DD-765, DD-763, DD-769, Falcon, ID, 1923-1924
Box 108 Folder 6	Culvert DD-755, DD-759, DD-761½, Pearson, MT, 1929
Box 108 Folder 7	Culvert DD-757, DD-769½, DD-773¼, DD-733½, DD-773⅔, DD-773¾, DD-775, DD-779, DD-781, DD-783, DD-785, DD-787½, Kyle, ID, with negatives of DD-773¼, 1924-1939
Box 108 Folder 8	Culvert DD-771, Kyle, ID, with photographs, 1963, undated
Box 108 Folder 9	Culvert DD-789, DD-791, DD-793, DD-795, DD-797, DD-799, DD-801, DD-803, Stetson, MT, 1924-1949
Box 108 Folder 10	Culvert DD-807 and DD-807½, Avery, ID, with photographs, 1936-1946
Box 108 Folder 11	Culvert DD-809½ and DD-811, Avery, ID, 1928-1959
Box 108 Folder 12	Culverts DD-903, DD-905, DD-911, DD-913, DD-917, DD-917½, DD-919, DD-925, DD-937½, DD-933, DD-941, DD-957, Bonner Junction, MT, 1926-1959
Box 108 Folder 13	Culverts DD-913½ and DD-923, Millers Ranch, MT, 1927
Box 108 Folder 14	Culverts DD-923, DD-925½, DD-927, DD-929, DD-931, DD-939, McNamara, MT, 1927-1931
Box 108 Folder 15	Culvert DD-959, DD-961, DD-969, DD-971, Sunset, MT, 1934
Box 108 Folder 16	Culvert DD-963, DD-965, DD-967, DD-973, DD-975, Clearwater, MT, 1935-1970
Box 108 Folder 17	Culvert DD-977, DD-979, DD-981, DD-983, DD-983½, DD-985, DD-987, DD-989, DD-991, DD-993, DD-995, Cottonwood, MT, 1946
Box 19 Folder 1-2	Bridge E-352, Freeport, IL, with photographs, 1917-1962
Box 19 Folder 3-4	Bridge E-392, Savanna, IL, with photographs, 1932-1936
Box 108 Folder 18	Bridge EE-2, Ethelton, ID, 1916-1945
Box 108 Folder 19	Bridge EE-4, Pocono, ID, 1936-1940
Box 108 Folder 20	Culvert EE-5, Avery, ID, with negatives, 1950-1951
Box 108 Folder 21	Culvert EE-7, Avery, ID, undated
Box 108 Folder 22	Bridge EE-8, Herrick, ID, 1944-1960
Box 108 Folder 23	Culvert EE-9, Avery, ID, 1923-1938
Box 108 Folder 24	Bridge EE-9, Calder, ID, 1927-1946
Box 108 Folder 25	Culvert EE-11, Ethelton, ID, 1923
Box 108 Folder 26	Bridge EE-12, Calder, ID, 1938-1971
Box 108 Folder 27	Bridge EE-14, Calder, ID, including drawings of EE-12, 1927-1938
Box 108 Folder 28	Culvert EE-15, Ethelton, ID, with photographs and negatives, 1941-1951
Box 108 Folder 29	Bridge EE-16, Calder, ID, 1950-1974
Box 108 Folder 30	Bridge EE-18, Zane, ID, 1944-1977
Box 108 Folder 31	Bridge EE-19, Ethelton, ID, with photographs and negatives, 1938-1959
Box 108 Folder 32	Culvert EE-23, Ethelton, ID, 1916-1924
Box 108 Folder 33	Culvert EE-25, Ethelton, ID, 1917, undated
Box 108 Folder 34	Bridge EE-30, Omega, ID, 1913-1934
Box 108 Folder 35	Culvert EE-31. Ethelton, ID, 1917-1946
Box 108 Folder 36	Bridge EE-32, Omega, ID, 1920-1952
Box 108 Folder 37	Bridge EE-32½, St. Maries, ID, 1948-1951
Box 108 Folder 38	Bridge EE-34, St. Maries, ID, 1935-1938
Box 108 Folder 39	Culvert EE-35, Ethelton, ID, 1917-1946
Box 108 Folder 40	Culvert EE-41, Marble Creek, ID, 1940-1957
Box 108 Folder 41	Culverts EE-43, EE-57, EE-59, Marble Creek, ID, 1917-1926
Box 108 Folder 42	Culverts EE-63, EE-65, EE-67, EE-69, EE-71, EE-73½, Pocono, ID, 1923-1951
Box 108 Folder 43	Culverts EE-73, EE-75, EE-77, EE-79, EE-81, EE-83, EE-89, EE-91, EE-93, EE-95, EE-97, EE-99, EE-101, EE-103½, EE-105, Herrick, ID, 1923-1948
Box 108 Folder 44	Culverts EE-107, EE-109, EE-111, EE-113, EE-115, EE-117, EE-121½, EE-123, EE-125, EE-129, EE-131, Calder, ID, 1923-1959
Box 108 Folder 45	Culvert EE-133, EE-135, EE-137, EE-139, Zane, ID, 1924-1926
Box 108 Folder 46	Culvert EE-135½ and EE-141, Calder, ID with photographs and negatives of EE-135½, 1948-1956
Box 108 Folder 47	Bridge EE-226½, Othello, WA, 1950-1959
Box 108 Folder 48	Bridge EE-602, Neva, NE, 1928-1950
Box 108 Folder 49-50	Bridge EE-708, Tiflis, WA, with photographs, 1910-1978
Box 108 Folder 51	Bridge EE-1434, Coeur d'Alene, ID, 1925-1957
Box 19 Folder 5	Bridge F-146, Monroe, WI, 1909-1941
Box 19 Folder 6	Bridge F-182, Browntown, WI, 1931
Box 19 Folder 7	Bridge F-232, Gratiot, WI, 1959
Box 19 Folder 8	Bridge FF-16, Tacoma, WA, 1944
Box 19 Folder 9	Bridge FF-20, Easton, WA, 1912-1978
Box 19 Folder 10	Bridge FF-246½, Sumner, WA, 1924-1970
Box 21 Folder 7	Bridge G-66, Mather, WI, 1932
Box 19 Folder 11	Bridge H-50, Vanland, IL, 1923
Box 19 Folder 12	Bridge H-71, Kirkland, IL, 1929-1930
Box 20 Folder 1	Bridge H-1044, Worthington, IA, 1920-1944
Box 21 Folder 8	Bridge HT-184, Glen Ellen, IA, 1918-1919
Box 21 Folder 9	Bridge HT-617, Trent, SD, 1910-1948
Box 21 Folder 10	Bridge I-18, Marion, IA, 1930-1962
Box 21 Folder 11	Bridge I-20, Marion, IA, 1949-1979
Box 20 Folder 2	Bridge I-22, Marion, IA, 1932-1942
Box 67 Folder 1	Bridge I-22, Marion, IA, 1967-1978
Box 67 Folder 2	Bridge I-24, Cedar Rapids, IA, 1925-1970
Box 20 Folder 3-5	Bridge I-26, Cedar Rapids, IA, 1919-1965
Box 67 Folder 3-4	Bridge I-26, Cedar Rapids, IA, 1965-1979
Box 20 Folder 6	Bridge I-44½ Cedar Rapids, IA, 1904-1970
Box 67 Folder 5	Bridge I-44½ Cedar Rapids, IA, 1954
Box 67 Folder 6	Bridge I-201½, Cedar Rapids, IA, 1902
Box 67 Folder 7	Bridge I-202½, Williamsburg, IA, 1945-1970
Box 22 Folder 1-2	Bridge I-284, Sigourney, IA, 1935-1949
Box 67 Folder 8	Bridge I-1010, Culver, IA, 1933-1983
Box 67 Folder 9	Bridge I-1014, Muscatine, IA, 1907-1983
Box 67 Folder 10	Bridge I-1018, Culver, IA, 1932-1973
Box 67 Folder 11	Bridge I-1022, Ardon, IA, 1934-1982
Box 67 Folder 12	Bridge I-1026, Ardon, IA, 1935-1983
Box 67 Folder 13	Bridge I-1030, Cranston, IA, 1937-1979
Box 68 Folder 1	Bridge I-1042, Cranston, IA, 1951-1955
Box 22 Folder 3-4	Bridge I-1044, Cranston, IA, 1927-1951
Box 22 Folder 5-6	Bridge I-1046, Cone, IA, 1934-1939
Box 22 Folder 7	Bridge I-1050, Gladwin, IA, 1931-1932
Box 22 Folder 8	Bridge I-1058, Gladwin, IA, 1933-1953
	Bridge J-0, Chicago, IL
Box 68 Folder 2	Army Corps of Engineers Dept., 1973
Box 68 Folder 3	Coast Guard Permit and Transportation Dept., 1973
Box 68 Folder 4	Drawings, circa 1940-1950
Box 68 Folder 5	Fender and Pile Repair, 1929-1940
Box 68 Folder 6	Fender Protection, 1953-1954
Box 68 Folder 7	Gearmotors, 1956-1957
Box 68 Folder 8-11	General Correspondence, 1914-1953
Box 69 Folder 1-5	General Correspondence, 1954-1974
Box 69 Folder 6	Pile Cluster Repair, 1945-1950
Box 69 Folder 7	Property Lot Lines, 1973
Box 21 Folder 1	Bridge M-140, Caryville, WI, 1927-1970
Box 21 Folder 2	Bridge M-156, Caryville, WI, 1935-1970
Box 21 Folder 3	Bridge M-168, Caryville, WI, 1928-191969
Box 21 Folder 4	Bridge M-170, Caryville, WI, 1950
Box 21 Folder 5	Bridge M-184, Eau Claire, WI, 1926-1968
Box 21 Folder 12	Bridge M-188, Eau Claire, WI, 1928-1981
Box 21 Folder 13	Bridge M-192, Shawton, WI, 1924-1959
Box 21 Folder 6	Bridge M-194, Eau Claire, WI, 1940-1981
Box 69 Folder 8-9	Bridge MT-334, Tacoma, WA, 1941-1955
Box 69 Folder 10	Bridge MT-562, Port Townsend, WA, 1930
Box 109 Folder 1	Bridge NM-352, Winnett, MT, 1924-1957
Box 109 Folder 2	Bridge NM-356, Winnett, MT, 1927-1950
Box 109 Folder 3	Bridge NM-358, Winnett, MT, 1927-1950
Box 109 Folder 4	Bridge NM-360, Winnett, MT, 1923
Box 109 Folder 5	Bridge NM-362, Winnett, MT, 1927-1940
Box 109 Folder 6	Bridge NM-364, Winnett, MT, 1923-1953
Box 109 Folder 7	Bridge NM-366, Winnett, MT, 1932-1965
Box 109 Folder 8	Bridge NM-370, Winnett, MT, 1923-1955
Box 109 Folder 9	Bridge NM-372, Winnett, MT, 1922-1939
Box 109 Folder 10	Bridge NM-376, Teigen, MT, 1931
Box 109 Folder 11	Bridge NM-378, Winnett, MT, 1927-1950
Box 109 Folder 12	Bridge NM-380, Teigen, MT, 1932-1960
Box 109 Folder 13	Bridge NM-368, Winnett, MT, 1930-1956
Box 109 Folder 14	Bridge NM-382, Teigen, MT, 1930-1954
Box 109 Folder 15	Bridge NM-384, Teigen, MT, 1929-1954
Box 109 Folder 16	Bridge NM-386, Teigen, MT, 1931-1950
Box 109 Folder 17	Bridge NM-388, Teigen, MT, 1931-1940
Box 109 Folder 18	Bridge NM-392, Teigen, MT, 1929-1954
Box 109 Folder 19	Bridge NM-394, Teigen, MT, 1929-1953
Box 109 Folder 20	Bridge NM-396, Teigen, MT, 1931
Box 109 Folder 21	Bridge NM-398, Teigen, MT, 1931-1956
Box 109 Folder 22	Bridge NM-400, Teigen, MT, 1936-1958
Box 109 Folder 23	Bridge NM-402, Grass Range, MT, 1931-1954
Box 109 Folder 24	Bridge NM-404, Grass Range, MT, 1953
Box 109 Folder 25	Bridge NM-406, Grass Range, MT, 1936
Box 109 Folder 26	Bridge NM-410, Grass Range, MT, 1939-1950
Box 109 Folder 27	Bridge NM-412, Grass Range, MT, 1929-1952
Box 109 Folder 28	Bridge NM-414, Grass Range, MT, 1931
Box 109 Folder 29	Bridge NM-416, Grass Range, MT, 1931-1964
Box 109 Folder 30	Bridge NM-418, Grass Range, MT, 1931-1964
Box 109 Folder 31	Bridge NM-420, Grass Range, MT, 1928
Box 109 Folder 32	Bridge NM-422, Grass Range, MT, 1929-1944
Box 109 Folder 33	Bridge NM-426, Becket, MT, 1932-1942
Box 109 Folder 34	Bridge NM-428, Becket, MT, 1927-1928
Box 109 Folder 35	Bridge NM-432, Becket, MT, 1927-1928
Box 109 Folder 36	Bridge NM-434, Becket, MT, 1932-1971
Box 109 Folder 37	Bridge NM-436, Becket, MT, 1945-1950
Box 109 Folder 38	Bridge NM-438, Becket, MT, 1927-1930
Box 109 Folder 39	Bridge NM-440, Becket, MT, 1932-1938
Box 109 Folder 40	Bridge NM-442, Becket, MT, 1931-1953
Box 109 Folder 41	Bridge NM-446, Becket, MT, 1936
Box 109 Folder 42	Culvert HNM-446, Becket, MT, 1942-1943
Box 109 Folder 43	Bridge NM-448, Becket, MT, 1929-1948
Box 109 Folder 44	Bridge NM-450, Becket, MT, 1929-1952
Box 109 Folder 45	Bridge NM-452, Becket, MT, 1941-1944
Box 109 Folder 46	Bridge NM-454, Forest Grove, MT, 1935-1945
Box 109 Folder 47	Bridge NM-465, Forest Grove, MT, 1928
Box 109 Folder 48	Bridge NM-458, Forest Grove, MT, 1927
Box 109 Folder 49	Bridge NM-460, Forest Grove, MT, 1926
Box 109 Folder 50	Bridge NM-462, Forest Grove, MT, 1924-1925
Box 109 Folder 51	Bridge NM-464, Forest Grove, MT, 1927
Box 109 Folder 52	Bridges NM-466, NM-468, NM-470, Forest Grove, MT, 1927-1928
Box 109 Folder 53	Bridges NM-472 and NM-474, Piper, MT, 1926-1932
Box 109 Folder 54	Bridge NM-476, Piper, MT, 1945-1950
Box 109 Folder 55	Bridge NM-478, Piper, MT, 1943-1945
Box 109 Folder 56	Bridge NM-480, Piper, MT, 1932-1935
Box 109 Folder 57	Bridge NM-500, Harlowton, MT, 1935-1944
Box 109 Folder 58	Bridge NM-502, Harlowton, MT, 1943-1944
Box 109 Folder 59	Bridge NM-504, Harlowton, MT, 1944
Box 109 Folder 60	Bridge NM-506, Wright, MT, 1945
Box 109 Folder 61	Bridge NM-508, Oka, MT, 1943-1944
Box 109 Folder 62	Culvert HNM-508, Oka, MT, 1943-1966
Box 109 Folder 63	Bridge NM-510, Judith Gap, MT, 1929-1966
Box 109 Folder 64	Bridge NM-512, Judith Gap, MT, 1931-1966
Box 109 Folder 65	Bridge NM-514, Judith Gap, MT, 1941-1966
Box 109 Folder 66	Bridge HNM-514, Judith Gap, MT, 1939
Box 109 Folder 67	Farm Crossing Bridge, Judith Gap, MT, 1924
Box 109 Folder 68	Bridge NM-518, Garneill, MT, 1941-1943
Box 109 Folder 69	Bridge NM-520, Garneill, MT, 1941-1963
Box 109 Folder 70	Bridges NM-522 and HNM-522, Garneill, MT, 1932-1965
Box 109 Folder 71	Culvert NM-524, Garneill, MT, 1929-1950
Box 109 Folder 72	Bridge NM-626, Christina, MT, 1944-1963
Box 109 Folder 73	Bridge NM-528, McClave, MT, 1945-1947
Box 109 Folder 74	Bridge NM-520, Straw, MT, 1943-1945
Box 109 Folder 75	Bridge NM-532, Straw, MT, 1929-1945
Box 109 Folder 76	Bridge NM-534, Straw, MT, 1949
Box 109 Folder 77	Bridge NM-536, Straw, MT, 1943-1947
Box 109 Folder 78	Bridge NM-538, Straw, MT, 1927-1952
Box 109 Folder 79	Bridge NM-540, Sipple, MT, 1929
Box 109 Folder 80	Bridge NM-542, Sipple, MT, 1928-1955
Box 109 Folder 81	Bridge NM-580, Lewistown, MT, 1928-1929
Box 109 Folder 82	Bridge NM-584, Baxter, MT, 1928-1957
Box 109 Folder 83	Bridge NM-586, Lewistown, MT, 1922-1958
Box 109 Folder 84	Bridge NM-588, Baxter, MT, 1921-1953
Box 109 Folder 85	Bridge NM-590, Baxter, MT, 1952-1953
Box 109 Folder 86	Bridge NM-592, Baxter, MT, 1936-1953
Box 109 Folder 87	Bridge NM-594, Brooks, MT, 1929-1950
Box 109 Folder 88	Bridge NM-596, Brooks, MT, 1930-1946
Box 109 Folder 89	Bridge NM-598, Brooks, MT, 1936-1945
Box 109 Folder 90	Bridge NM-600, Brooks, MT, 1929-1971
Box 109 Folder 91	Bridge NM-602, Brooks, MT, 1932-1940
Box 109 Folder 92	Bridge NM-604, Brooks, MT, 1953
Box 109 Folder 93	Bridge NM-606, Brooks, MT, 1932-1966
Box 109 Folder 94	Bridge NM-608, Brooks, MT, 1932-1966
Box 109 Folder 95	Bridge NM-610, Hilger, MT, 1944-1945
Box 109 Folder 96	Bridge NM-612, Hilger, MT, 1943-1966
Box 109 Folder 97	Bridge NM-614, Hilger, MT, 1943-1975
Box 109 Folder 98	Bridge NM-616, Hilger, MT, with photographs, 1965-1980
Box 109 Folder 99	Northern Montana Bridges Map, Undated
Box 109 Folder 100	Bridge NM-618, Hilger, MT, 1965, undated
Box 109 Folder 101	Bridge NM-620, Roy Junction, MT, 1948-1950
Box 109 Folder 102	Bridge NM-624, Christina, MT, 1932-1960
Box 109 Folder 103	Bridge NM-626, Christina, MT, 1963
Box 109 Folder 104	Bridge NM-630, Suffolk, MT, 1950-1965, undated
Box 109 Folder 105	Bridge NM-632, Suffolk, MT, 1929-1953
Box 109 Folder 106	Bridge NM-643, Suffolk, MT, 1953
Box 109 Folder 107	Bridge NM-646, Winifred, MT, 1953, undated
Box 109 Folder 108	Bridge NM-661, Teigen, MT, 1958
Box 109 Folder 109	Culvert NM-765, Forest Grove, MT, 1927
Box 110 Folder 1	Culverts NM-771, NM-779, NM-783, NM-785, NM-787, NM-791, NM-809, Forest Grove, MT, 1922-1923
Box 110 Folder 2	Culverts NM-821, NM-823, NM-825, NM-827, NM-829, Piper, MT, 1927-1929
Box 110 Folder 3	Culvert NM-831, Lewistown, MT, 1930
Box 110 Folder 4	Culverts NM-833, NM-835, NM-837, Orange, MT, 1926-1964
Box 110 Folder 5	Culverts NM-841 and NM-847, Lewistown, MT, 1930
Box 110 Folder 6	Culverts NM-843, NM-845, NM-849, NM-855, NM-857, Heath, MT, 1931, 1936
Box 110 Folder 7	Culvert NM-851, Gypsum, MT, 1926-1927
Box 110 Folder 8	Culvert NM-701, Grass Range, MT, 1939
Box 110 Folder 9	Bridges NM-702, NM-704, NM-706, Roy Junction, MT, 1945-1967
Box 110 Folder 10	Bridges NM-708, NM-710, NM-716, NM-720, Armells, MT, 1931-1967
Box 110 Folder 11	Bridge NM-724, Fergus, MT, 1943-1945
Box 110 Folder 12	Bridges NM-726 and NM-728, Roy, MT, 1943-1967
Box 110 Folder 13	Culverts NM-729, NM-739½, NM-757, Becket, MT, 1917-1925
Box 110 Folder 14	Culvert NM-859, Heath, MT, 1931
Box 110 Folder 15	Culvert NM-917, Harlowton, MT, 1938-1966
Box 110 Folder 16	Culvert NM-935, Wright, MT, 1929
Box 110 Folder 17	Culvert NM-953, Harlowton, MT, 1971
Box 110 Folder 18	Culvert NM-971, Judith Gap, MT, 1944-1947
Box 110 Folder 19	Culverts NM-983½ and NM-985, Judith Gap, MT, 1924-1948
Box 110 Folder 20	Culvert NM-985⅔, Judith Gap, MT, 1924-1957
Box 110 Folder 21	Culvert NM-991, Garneill, MT, 1971
Box 110 Folder 22	Culverts NM-995 and HNM-995, Garneill, MT, 1915-1939
Box 110 Folder 23	Culvert NM-1003 9/10, Straw, MT, 1969
Box 110 Folder 24	Bridge NM-1004, Lewistown, MT, 1942-1967
Box 110 Folder 25	HNM-1005, Straw, MT, 1949-1960
Box 110 Folder 26	Culvert NM-1005, Straw, MT, 1935-1952
Box 110 Folder 27	Culvert NM-1005½ and NM-1005¾, Straw, MT, 1922-1949
Box 110 Folder 28	Bridge NM-1006, Lewistown, MT, 1931
Box 110 Folder 29	Bridge NM-1008, Lewistown, MT, 1937-1945
Box 110 Folder 30	Bridge NM-1009, Straw, MT, 1928-1947
Box 110 Folder 31	Bridge NM-1010, Lewistown, MT, 1933-1968
Box 110 Folder 32	Bridge NM-1012½, Hanover, MT, 1918-1960
Box 110 Folder 33	Bridge NM-1013, Sipple, MT, 1929-1953
Box 110 Folder 34	Bridge HNM-901, Harlowton Yard, MT, 1929-1939
Box 110 Folder 35	Bridge Number 53/Spring Creek Crossing, Hanover, MT, 1921-1965
Box 110 Folder 36-38	Bridge NM-1016/Judith River Viaduct, Lewistown to Great Falls Line, with photographs and negatives, 1912-1969
Box 110 Folder 39-41	Bridge NM-1018/Indian Creek Viaduct, Danvers, MT, with photographs, 1912-1983
Box 110 Folder 42	Culvert NM-1019½, Sipple, MT, 1923-1947
Box 111 Folder 1-5	Bridge NM-1020, Danvers, MT, with photographs and negatives, 1912-1968
Box 111 Folder 6	Bridge NM-1022, Hoosac, MT, 1925-1952
Box 111 Folder 7	Bridge NM-1024, Hoosac, MT, 1925-1965
Box 111 Folder 8	Bridge NM-1026, Hoosac, MT, 1944
Box 111 Folder 9	Bridge NM-1028, Denton, MT, 1925
Box 111 Folder 10	Bridge NM-1030, Denton, MT, 1950-1959
Box 111 Folder 11	Bridges HNM-1030½ and HNM-1030¾, Denton, MT, 1939-1963
Box 111 Folder 12	Bridge NM-1032, Denton, MT, 1925-1951
Box 111 Folder 13	Bridge NM-1036, Coffee Creek, MT, 1931-1952
Box 111 Folder 14	Bridge NM-1038, Coffee Creek, MT, 1960
Box 111 Folder 15	Bridge NM-1040 and NM-1040½, Arrow Creek, MT, 1931-1959
Box 111 Folder 16	Bridge NM-1042, Arrow Creek, MT, with photographs, 1949-1978
Box 111 Folder 17	Bridge NM-1044, Arrow Creek, MT, 1944-1979
Box 111 Folder 18	Bridge NM-1046, Pownal, MT, 1936-1953
Box 111 Folder 19	Bridge NM-1048, Pownal, MT, 1944-1971
Box 111 Folder 20	Bridge NM-1050, Pownal, MT, 1939
Box 111 Folder 21	Bridge NM-1052, Pownal, MT, 1936-1952
Box 111 Folder 22	Bridge NM-1056, Square Butte, MT, 1925-1954
Box 111 Folder 23	Bridge NM-1058, Square Butte, MT, 1936-1954
Box 111 Folder 24	Bridge NM-1060, Square Butte, MT, 1923-1941
Box 111 Folder 25	Bridge NM-1062, Square Butte, MT, 1940
Box 111 Folder 26	Bridge NM-1066, Square Butte, MT, 1965
Box 111 Folder 27	Bridge NM-1068, Square Butte, MT, 1969
Box 111 Folder 28	Bridge NM-1070, Square Butte, MT, 1932-1952
Box 111 Folder 29	Bridge NM-1072, Geraldine, MT, 1924-1950
Box 111 Folder 30	Bridge NM-1074, Geraldine, MT, 1932-1961
Box 111 Folder 31	Bridge NM-1074½, Geraldine, MT, 1925-1966
Box 111 Folder 32	Bridge NM-1076, Montague, MT, 1928-1930
Box 111 Folder 33	Culvert NM-1077, Glengarry, MT, 1914-1923
Box 111 Folder 34	Bridge NM-1078, Montague, MT, 1943-1944
Box 111 Folder 35	Bridge NM-1080, Montague, MT, 1932-1952
Box 111 Folder 36	Culvert HNM-1082, Shonkin, MT, 1940-1958
Box 111 Folder 37	Bridge NM-1082, Shonkin, MT, 1925-1943
Box 111 Folder 38	Bridge NM-1086, Shonkin, MT, 1953-1971
Box 111 Folder 39	Bridge NM-1088, Shonkin, MT, 1943-1958
Box 111 Folder 40	Bridge NM-1090, Shonkin, MT, 1944-1966
Box 111 Folder 41	Bridge NM-1092, Shonkin, MT, 1940-1945
Box 111 Folder 42	Bridge NM-1094, Shonkin, MT, 1932-1943
Box 111 Folder 43	Bridge NM-1096, Shonkin, MT, 1938
Box 111 Folder 44	Bridge NM-1100, Big Sag, MT, 1928-1929
Box 111 Folder 45	Bridge NM-1102, Big Sag, MT, 1927-1965
Box 111 Folder 46	Bridge NM-1104, Big Sag, MT, 1928-1965
Box 111 Folder 47	Bridge NM-1106, Highwood, MT, 1932-1964
Box 111 Folder 48	Bridge NM-1106½, Highwood, MT, 1915-1959
Box 111 Folder 49	Bridge NM-1110, Highwood, MT, 1923-1946
Box 111 Folder 50	Bridge NM-1114½, Waltham, MT, 1953
Box 111 Folder 51	Bridge NM-1116, Waltham, MT, 1929-1943
Box 112 Folder 1	Bridge NM-1128½, Salem, MT, 1920-1950
Box 112 Folder 2	Bridge NM-1138, Great Falls, MT, 1940-1971
Box 112 Folder 3	Bridge NM-1140, Great Falls, MT, 1922-1954
Box 112 Folder 4	Bridge NM-1144, Manchester, MT, 1923-1936
Box 112 Folder 5	Bridge NM-1146, Manchester, MT, 1931-1958
Box 112 Folder 6	Bridge NM-1148, Manchester, MT, 1926-1954
Box 112 Folder 7	Bridge NM-1150, Vaughn, MT, 1931, undated
Box 112 Folder 8	Bridge NM-1154, Vaughn, MT, 1924-1932
Box 112 Folder 9	Bridge NM-1156, Vaughn, MT, 1930-1931
Box 112 Folder 10	Bridge NM-1160, Vaughn, MT, 1932-1941
Box 112 Folder 11	Bridge NM-1162, Dracut, MT, 1924
Box 112 Folder 12	Bridge NM-1166½, Dracut Junction, MT, 1950-1966
Box 112 Folder 13	Culvert NM-1167, Lewistown, MT, 1932
Box 112 Folder 14	Culvert NM-1169, Lewistown, MT, 1927
Box 112 Folder 15	Bridge NM-1168, Dracut, MT, 1931-1952, undated
Box 112 Folder 16	Bridge NM-1170, Dracut, MT, 1946-1969
Box 112 Folder 17	Culverts NM-1171 and NM-1175, Lewistown, MT, 1932
Box 112 Folder 18	Bridge NM-1174, Dracut, MT, 1931-1961
Box 112 Folder 19	Bridge NM-1176, Ashuelot, MT, 1929-1966
Box 112 Folder 20	Culvert NM-1177, Baxter, MT, 1924-1927
Box 112 Folder 21	Bridge NM-1178, Ashuelot, MT, 1925-1947
Box 112 Folder 22	Culvert NM-1179 and NM-1181, Lewistown, MT, 1932-1970
Box 112 Folder 23	Bridge NM-1180, Ashuelot, MT, 1938-1962
Box 112 Folder 24	Bridge NM-1182, Fairfield, MT, 1945-1947, undated
Box 112 Folder 25	Culvert NM-1183, NM-1185, NM-1187, Baxter, MT, 1925-1932
Box 112 Folder 26	Bridge NM-1184, Fairfield, MT, 1916-1971
Box 112 Folder 27	Bridge NM-1186, Fairfield, MT, 1945-1950
Box 112 Folder 28	Bridge NM-1188, Fairfield, MT, 1914-1962
Box 112 Folder 29	Bridge NM-1190, Eastham, MT, 1943-1979
Box 112 Folder 30	Bridge NM-1194, Choteau, MT, 1946
Box 112 Folder 31	Bridge NM-1196, Choteau, MT, with photographs, 1921-1971
Box 112 Folder 32	Bridge NM-1198, Choteau, MT, 1932-1945
Box 112 Folder 33	Culverts NM-1189, NM-1191, NM-1193, NM-1195, NM-1203, NM-1207, Baxter, MT, 1925-1936
Box 112 Folder 34	Bridge NM-1200, Choteau, MT, 1938-1966
Box 112 Folder 35	Bridge NM-1202, Choteau, MT, 1949
Box 112 Folder 36	Bridge NM-1204, Farmington, MT, 1934-1947
Box 112 Folder 37	Culverts NM-1205, NM-1207½, NM-1209, HNM-1209, NM-1211, NM-1213, MN-1215, NM-1215¾, NM-1215⅘, NM-1215½, NM-1215⅔, NM-1219, NM-1221, NM-1225, NM-1227, NM-1231, NM-1233, NM-1235, Brooks, MT, 1926-1953
Box 112 Folder 38	Bridge NM-1206 and NM-1208, Agawam, MT, 1945-1947
Box 112 Folder 39	Bridge NM-1210, Agawam, MT, 1945
Box 112 Folder 40	Culvert NM-1237, Lewistown, MT, 1930
Box 112 Folder 41	Culverts NM-1239, NM-1241, NM-1243, NM-1245, NM-1247, NM-1249, NM-1251, NM-1253, NM-1255, NM-1261, NM-1263, NM-1263½, Hilger, MT, 1926-1932
Box 112 Folder 42	Culverts NM-1265, NM-1237, NM-1269, NM-1271, NM-1273, NM-1275, NM-1277, NM-1279, NM-1281, NM-1283, Hilger, MT, 1926-1931
Box 112 Folder 43	Culverts NM-1285, NM-1287, NM-1289, NM-1291, NM-1293, NM-1301, NM-1309, NM-1335, Roy Junction, MT, 1930-1949
Box 112 Folder 44	Culvert NM-1317 and NM-1353, Christina, MT, 1926-1966
Box 112 Folder 45	Bridge NM-1361, Christina, MT, 1919-1957
Box 112 Folder 46	Culverts NM-1339, NM-1311½, NM-1349, Moulton, MT, 1930-1947
Box 112 Folder 47	Bridge NM-1393, Winifred, MT, 1936
Box 112 Folder 48	Culverts NM-1503½, NM-1515, NM-1523, MN-1529, Roy Junction, MT, 1919-1959
Box 112 Folder 49	Culvert NM-1579½, Romunstadt, MT, 1918-1951
Box 112 Folder 50	Culvert NM-1547, Armells, MT, 1939-1943
Box 112 Folder 51	Culverts NM-1617, NM-1621, NM-1621½, NM-1623, Roy, MT, 1931-1963
Box 112 Folder 52	Culverts NM-3371, NM-3373, NM-3373¼, NM-3375, NM-3381, Geraldine, MT, 1943-1966
Box 112 Folder 53	Bridge NM-3205, Arrow Creek, MT, 1934-1970
Box 112 Folder 54	Culverts NM-3391, NM-3393, NM-3393½, NM-3399, Montague, MT, 1943-1957
Box 112 Folder 55	Culverts NM-3403, NM-3411, NM-3431, NM-3425, Montague, MT, 1947-1957
Box 112 Folder 56	Culverts NM-3427, MN-3429, NM-3431, NM-3433, NM-3435, NM-3437, NM-3439, NM-3441, NM-3465½, NM-3473, NM-3483, NM-3485, NM-3489½, Shonkin, MT, 1919-1966
Box 112 Folder 57	Culverts NM-3475, NM-3503, NM-3513, NM-3517, NM-3519, NM-3521, HNM-3523, HNM-3523¾, NM-3525, NM-3533, Big Sag, MT, 1914-1966
Box 112 Folder 58	Culverts HNM-3539, NM-3557, NM-3579, Highwood, MT, 1940-1958
Box 112 Folder 59	Bridge HNM-3549 N, Highwood, MT, with photographs, 1966
Box 112 Folder 60	Culvert NM-3611, Waltham, MT, with photographs and negatives, 1931-1971
Box 112 Folder 61	Culvert NM-3595, NM-3599, NM-3607, NM-3619, Waltham, MT, 1914-1954
Box 112 Folder 62	Culvert NM-3621, Waltha, MT, with photographs, 1967
Box 113 Folder 1	Culvert NM-3621, NM-3623, NM-3627, NM-3629, NM-3633, NM-3643, Waltham, MT, 1934-1953
Box 113 Folder 2	Culvert NM-3637, Waltham, MT, 1941-1953
Box 113 Folder 3	Culvert NM-3645, NM-3647, NM-3647½, Waltham, MT, 1935-1957
Box 113 Folder 4	Culvert NM-3655, Waltham, MT, 1946-1957
Box 113 Folder 5	Culvert NM-3657, Waltham, MT, with photographs, 1955-1969
Box 113 Folder 6	Bridge NM-3665, Waltham, MT, 1934-1978
Box 113 Folder 7	Culvert NM-3649, Waltham, MT, 1936-1948
Box 113 Folder 8	Culvert NM-3651, Waltham, MT, 1935-1953
Box 113 Folder 9	Culvert NM-3663, Waltham, MT, with photographs and negatives, 1943-1945
Box 113 Folder 10	Culvert NM-3657½, Belt Creek, MT, 1914-1946
Box 113 Folder 11	Culvert NM-3677, Roger, MT, 1946-1953, undated
Box 113 Folder 12	Culvert NM-3671, Rogers, MT, 1953
Box 113 Folder 13	Culvert NM-3675, Salem, MT, with photographs and negatives, including negatives of culverts NM-3611, NM-3675, NM-3677, NM-3685, NM-3699, 1923-1966
Box 114 Folder 1	Bridge NM-3677, Great Falls, MT, with photographs and negatives, 1941-1978
Box 114 Folder 2	Culvert HNM-3679 S, Salem, MT, 1943-1965
Box 114 Folder 3	Culvert NM-3685, Salem, MT, with photographs and negatives, 1951-1966
Box 114 Folder 4	Culvert NM-3699, Cooper, MT, with photographs, 1914-1970
Box 114 Folder 5	Culvert NM-3771½, Manchester, MT, 1927
Box 114 Folder 6	Culvert NM-3823 and NM-3831, Dracut, MT, 1924-1925
Box 114 Folder 7	Culvert NM-3859, Ashuelot, MT, 1945
Box 114 Folder 8	Culvert NM-3979 and HNM-3895, Choteau, MT, 1942-1949
Box 114 Folder 9	Culvert NM-3911½, NM-3911¾, NM-3911⅔, Fairfield, MT, 1922-1939
Box 114 Folder 10	Bridge HNM-3891, Fairfield, MT, 1935-1957
Box 114 Folder 11	Culvert NM-3951½, Fairfield, MT, with photographs and negatives, 1952
Box 114 Folder 12	Bridges HNM-4037, HNM-4039, HNM-4039½, NM-4073, Farmington, MT, 1934-1940
Box 114 Folder 13	Culvert NM-4077, NM-4083, NM-4085, NM-4085½, Agawam, MT, 1943-1946
Box 114 Folder 14	Unnumbered Bridge and Culvert East of Agawam, MT, 1923-1936
Box 114 Folder 15	Department of the Interior's Sun River Project in Montana: Greenfields Distribution System, 1916
Box 69 Folder 11	Bridge O-460¾, Bass Lake, MN, 1929-1930
Box 24 Folder 1	Bridge P-90, Frederick, SD, 1939-1960
Box 24 Folder 2	Bridge P-132, Edgeley, ND, 1962
Box 24 Folder 3	Bridge PA-148B, Port Angeles, WA, 1927-1956
Box 24 Folder 4	Bridge Q-11, Hokah, MN, 1953
Box 24 Folder 5	Bridge Q-24, Hokah, MN, 1921-1924
Box 24 Folder 6	Bridge Q-38, Hokah, MN, 1920-1928
Box 24 Folder 7	Bridge Q-64, Mound Prairie, MN, 1919-1931
Box 24 Folder 8	Bridge Q-170, Peterson, MN, 1923-1929
Box 24 Folder 9	Bridge Q-180,Whalan, MN, 1910-1933
Box 24 Folder 10-11	Bridge Q-190, Lanesboro, MN, 1910-1954
Box 24 Folder 12	Bridge Q-192, Lanesboro, MN, 1922-1925
Box 24 Folder 13	Bridge Q-194, Lanesboro, MN, 1916
Box 24 Folder 14	Bridge Q-196, Lanesboro, MN, 1909-1925
Box 70 Folder 1-6	Bridge S-334, Mendota, MN, 1891-1958
Box 71 Folder 1	Bridge S-334, Mendota, MN, 1957-1958
Box 71 Folder 2-3	Bridge S-678, Decorah, IA, 1904-1963
Box 71 Folder 4	Bridge T-8, Manilla, IA, 1933-1984
Box 71 Folder 5	Bridge T-10½, Manilla, IA, 1938-1969
Box 71 Folder 6-7	Bridge T-108, Ute, IA, 1918-1937
Box 71 Folder 8	Bridge T-110½, Mapleton, IA, 1933-1957
Box 71 Folder 9	Bridge T 122½, Mapleton, IA, 1925-1975
Box 71 Folder 10	Bridge T-128¼, Rodney, IA, 1928-1946
Box 72 Folder 1	Bridge T-128¼, Rodney, IA, 1947-1960
Box 72 Folder 2	Bridge T-182½, Luton, IA, 1960
Box 72 Folder 3-5	Bridge T-196½, Morningside, IA, 1919-1947
Box 72 Folder 6	Bridge T-202½, Sioux City, IA, 1916-1922
Box 73 Folder 1	Bridge T-202½, Sioux City, IA, 1923-1927
Box 73 Folder 2	Bridge T-204, Mason City, IA, 1951
Box 73 Folder 3	Bridge T-208, Baltic, SD, 1922
Box 73 Folder 4	Bridge T-209, Grant Center, IA, 1946
Box 73 Folder 5	Bridge T-210, Sioux City, IA, 1920-1926
Box 25 Folder 1-2	Bridge T-210B, Sioux City, IA, 1965-1972
Box 73 Folder 6	Bridge T-210½, Sioux City, IA, 1927
Box 73 Folder 7	Bridge T-211½, Grant Center, IA, 1909
Box 73 Folder 8	Bridge T-212, Sioux City, IA, 1927
Box 73 Folder 9	Bridge T-271½, Morningside, IA, 1908
Box 73 Folder 10	Bridge T-312, Melbourne, WA, 1944
Box 73 Folder 11	Bridge T-854, Trent, SD, 1903-1936
Box 73 Folder 12	Bridge T-1012, Avon, SD, 1928
Box 73 Folder 13	Bridge TH-36.66, Faithorn, IL, 1929-1959
Box 73 Folder 14	Bridge TH-36.96, Faithorn, IL, 1949-1947
Box 73 Folder 15	Bridge TH-39.14, Faithorn, IL, 1949-1969
Box 73 Folder 16	Bridge TH-41.94, Judy, IL, 1934-1967
Box 73 Folder 17	Bridge TH-47.31, Brock, IL, 1934-1959
Box 73 Folder 18	Bridge TH-49.31, Puder, IL, 1930-1947
Box 73 Folder 19	Bridge TH-49.51, Faithorn, IL, 1934-1949
Box 73 Folder 20	Bridge TH-49.93, 1942
Box 73 Folder 21	Bridge TH-51.37, 1941
Box 74 Folder 1	Bridge TH-53.33, Delmar, IL, 1927-1974
Box 74 Folder 2	Bridge TH-54.20, Delmar, IL, 1934-1962
Box 74 Folder 3	Bridge TH-55.98, Tallmadge, IL, 1939-1949
Box 74 Folder 4	Bridge TH-57.67, Tallmadge, IL, 1933-1943
Box 74 Folder 5	Bridge TH-64.72, Pembroke, IL, 1939-1974
Box 74 Folder 6	Bridge TH-67.55, North Hooper, IL, 1934-1980
Box 74 Folder 7	Bridge TH-148.34, West Dana, IN, 1934-1958
Box 74 Folder 8	Bridge TH-149.97, West Dana, IN, 1945-1969
Box 74 Folder 9	Bridge TH-153.72, Cottrell, IN, 1943-1972
Box 74 Folder 10	Bridge TH-155.44, St. Bernice, IN, 1943
Box 74 Folder 11	Bridge TH-156.53, St. Bernice, IN, 1944
Box 25 Folder 3-4	Bridge TH-158.2 (over Brouillets Creek), Clinton, IN, 1933-1938
Box 74 Folder 12-13	Bridge TH-158.2, West Clinton, IN, 1933-1979
Box 74 Folder 14	Bridge TH-158.76, Blanford Junction, IN, 1944-1947
Box 74 Folder 15	Bridge TH-161.52, Bradshaw, IN, 1938-1958
Box 74 Folder 16	Bridge TH-164.8 and TH-164.91, Bradshaw, IN, 1925-1979
Box 74 Folder 17	Bridge TH-165.11, Bradshaw, IN, 1935-1979
Box 25 Folder 5	Bridge TH-165.54, Bradshaw, IN, 1923-1946
Box 75 Folder 1	Bridge TH-165.7 and TH-166.27, Bradshaw, IN, 1935-1971
Box 75 Folder 2	Bridge TH-166.45, Bradshaw, IN, 1934-1978
Box 75 Folder 3	Bridge TH-166.89, Bradshaw, IN, 1953-1954
Box 75 Folder 4	Bridge TH-169.70, Fayette, IN, 1947-1976
Box 75 Folder 5	Bridge TH-169.72, Fayette, IN, 1936-1979
Box 75 Folder 6-7	Bridge TH-169.92, Fayette, IN, 1923-1979
Box 75 Folder 8	Bridge TH-277.90 – TH-285.89, Kurtz, IN, 1938-1976
Box 75 Folder 9	Bridge TH-286.6 – TH-322.7, Freetown, IN, 1935-1973
Box 75 Folder 10	Bridge U-622, 1956-1958
Box 25 Folder 6	Bridge Y-12, Clive, IA, 1934-1979
Box 75 Folder 11	Bridge Y-20½, Clive, IA, 1956-1972
Box 26 Folder 1	Bridge Y-408½, Sac City, IA, drawings only, 1937
Box 75 Folder 12	Bridge Y-669¼, Ingersoll, IA, 1946-1947
Box 26 Folder 2	Bridge Z-14P, Chicago, IL, 1986
Box 75 Folder 13	Bridge Z-532, Green Island, IA, 1956-1983
Box 75 Folder 15	Bridge Z-654.66, Lost Nation, IA, 1947-1973
Box 75 Folder 15	Bridge Z-758, Marion, IA, 1961-1970
Box 76 Folder 1	Bridge Z-758½, Martelle, IA, 1936-1970
	Bridge Z-796.375, Marion, IA
Box 76 Folder 2	Bridge Beam and Girder Spans, 1958
Box 76 Folder 3	Bridge Design Sheets, 1958
Box 76 Folder 4	Bridge Quantities, 1958
Box 76 Folder 5	Bridge Z-804A, Louisa, IA, 1933-1970
Box 26 Folder 3	Bridge Z-814, Louisa, IA, 1944-1975
Box 76 Folder 6	Bridge Z-816, Covington, IA, 1931-1985
Box 76 Folder 7	Bridge Z-832.33, Atkins, IA, 1936
Box 76 Folder 8	Bridge Z-858.66, Keystone, IA, 1957-1970
Box 76 Folder 9	Bridge Z-860½, 1953-1964
Box 26 Folder 4	Bridge Z-882, Elberon, IA, 1936-1943
Box 76 Folder 10	Bridge Z-896, Vining, IA, 1937-1976
Box 26 Folder 5	Bridge Z-902, Gladstone, IA, 1934-1974
Box 76 Folder 11	Bridge Z-921 – Z-968, IA, 1912-1965
Box 76 Folder 12	Bridge Z-971 – Z-998½, IA, 1907-1969
Box 26 Folder 6	Bridge Z-1082, Maxwell, IA, 1954-1960
Box 26 Folder 7-8	Bridge Z-1510, Yorkshire, IA, 1930-1947
Box 27 Folder 1	Bridge Z-1518, Neola, IA, 1933
	Bridges – Miscellaneous
Box 76 Folder 13	Bridge over Vermillion River, Hastings, MN, 1986
Box 76 Folder 14	Bridge over Yakima River, Yakima, WA, 1977
Box 77 Folder 1	General Correspondence, 1917-1921
Box 77 Folder 2-4	Walkways on Coast and Rocky Mountain Divisions, 1969-1973
	Bridges and Culverts – Indexes
Box 77 Folder 5	Chicago & Milwaukee Division (A-E-F-V Bridges), 1945-1950, undated
Box 77 Folder 6-8	Coast Division (BN-EE-FF-PA-WH Bridges), 1924-1925
Box 78 Folder 1	Coast Division (EE-FF-GG Bridges), undated
Box 83	Coast Division (EE-FF Bridges), undated
Box 78 Folder 2	Hastings & Dakota Division (O-P Bridges), 1919, undated
Box 78 Folder 3	Idaho Division (EE-WN Bridges), 1949, undated
Box 78 Folder 4	Iowa Division (H-Y-Z Bridges), 1949, undated
Box 78 Folder 5	Iowa & Dakota Division (W-R-T Bridges), 1930-1951, undated
Box 78 Folder 6	Iowa & Southern Minnesota Division (Q Bridges), undated
Box 79 Folder 1	La Crosse Division (B-C-G-L-M-N Bridges), 1952, undated
Box 79 Folder 2-3	Madison Division (B-C-F-V Bridges), undated
Box 79 Folder 4	Milwaukee Division (D Bridges), undated
Box 84-85	Montana Division (AA-BB-NM Bridges), 1972
Box 79 Folder 5	Prairie du Chien Division and Racine & Southwestern Division (B Bridges and unidentified letters), undated
Box 79 Folder 6	Rocky Mountain Division (BB-CC-NM Bridges), undated
Box 80 Folder 1	Rocky Mountain Division (DD-NM Bridges), undated
Box 86	Rocky Mountain Division (BB-CC-DD Bridges), 1945-1972
Box 82 Folder 1	System - Copy of Inspector's Reports, 1894-1899
Box 80 Folder 2	Trans-Missouri Division (AA-BB Bridges), undated
Box 80 Folder 3-4	Unknown Divisions (B-C Bridges), undated
Box 82 Folder 2	Weights of All Steel Bridges, List of All Pile and Timber Trestles - Lines East & West, circa 1923
	Culverts
Box 27 Folder 2	11 and 15, Rockford, IL, 1925-1933
Box 27 Folder 3	76, 79, 81, 82, 84, 85, and 88, Kirkland, IL, 1922-1957
Box 27 Folder 4	89, Nichols, IL, 1939-1940
Box 27 Folder 5	92, 93, 96, 97, 98, and 99, Wilkinson, IL, 1923-1941
Box 27 Folder 6	104, Bradt, IL, 1922-1923
Box 27 Folder 7	106, 110, and 116, DeKalb, IL, 1924-1931
Box 27 Folder 8	274A, Momence, IL, 1934-1951
Box 27 Folder 9	B-114, Lima Center, WI, 1946-1947
Box 27 Folder 10	BB-255¼, Musselshell, MT, 1950-1952
Box 27 Folder 11	BB 283½, Delphia, MT, 1954
Box 27 Folder 12	BB-469, Ryegate, MT, 1952-1963
Box 27 Folder 13	BB-535, Shawmut, MT, 1914-1956
Box 27 Folder 14	BB-551½, Shawmut, MT, 1935-1942
Box 27 Folder 15	BB-559, Winnecook, MT, 1916-1933
Box 27 Folder 16	BB-571, Harlowton, MT, 1914-1967
Box 27 Folder 17	DD-93 – DD-117, between Haskell and Drummond, MT, 1958
Box 27 Folder 18	H-18, Camp Grant, IL, 1923
Box 27 Folder 19	I-25, Walford, IA, 1904
Box 80 Folder 5	L-1107 – L-1501, between Hastings, MN and Lakeland, MN, 1905-1975
Box 27 Folder 20	M-144, Caryville, WI, 1927-1963
Box 80 Folder 6	O-1797, Fargo, ND, 1937-1977
Box 27 Folder 21	Q-132, Q-134, and Q-136, Rushford, MN, 1903-1939
Box 27 Folder 22	Q-135, Q-141, Q-149, Q-151½, Q-153, Q-155, and Q-161, Fountain, MN, 1910-1953
Box 27 Folder 23	Q-167, Q-167½, Q-173, Q-179, and Q-183, Wykoff, MN, 1903-1930
Box 27 Folder 24	Q-189, Q-189½, Q-195, Q-197, and Q-197½, Spring Valley, MN, 1908-1956
Box 80 Folder 7	T-122, Mapleton, IA, 1931-1973
Box 27 Folder 25	Z-867, Gladstone, IA, 1924-1963
Box 28 Folder 1-2	Z-1000 to Z-1019 and HZ-1018 to HZ-1019, IA, 1912-1974
Box 28 Folder 3	Z-1131½ and Z-1133, Des Moines and River Junction, IA, 1910
Box 28 Folder 4	Z-1149, Z-1160, Z-1162, and Z-1166, Woodward, IA, 1905-1915
Box 28 Folder 5	Z-1161, Z-1163, Z-1196, and Z-1198, Bouton, IA, 1903-1964
Box 28 Folder 6	Z-1167, Z-1169, Z-1168⅛, and Z-1168¼, Perry, IA, 1912-1958
Box	Culverts – Miscellaneous
Box 81 Folder 1	Culverts in Washington and Wisconsin, 1925-1953
Box 28 Folder 7	Farm Crossing Culvert, Madrid, IA, 1912
Box 28 Folder 8	Highway Bridge HI-1052, Cone, IA, 1972