Lost Bridge, Spanning Little Missouri River, twenty-three miles north of Killdeer, ND, on State Highway No. 22, Killdeer, Dunn County, ND

Significance: The Lost Bridge is a three-span, riveted Parker through truss, bridge designed by the North Dakota Highway Department and constructed in 1930. The bridge is associated with the Great Depression and stood relatively unused until approach roads were constructed in 1953 and paved in 1963 (north side) and in 1967 (south side). Thus, the bridge is well known in the State as "Lost Bridge."
Survey number: HAER ND-8
Building/structure dates: 1930 Initial Construction
Building/structure dates: 1994 Demolished
Building/structure dates: 1953 Subsequent Work
Building/structure dates: 1967 Subsequent Work
Building/structure dates: 1970 Subsequent Work
Building/structure dates: 1959 Subsequent Work