19th Century (7,635)
Boyer River (36)
Built 1899 (400)
Built during 1890s (2,997)
Chicago & North Western Railway (1,408)
Concrete girder (1,006)
Deck girder (5,783)
Girder (10,307)
Harrison County, Iowa (78)
Iowa (6,530)
Lassig Bridge & Iron Works (220)
Lattice through truss (562)
Lattice truss (594)
| M-frame portal (84)
Missouri Valley, Iowa (3)
Open (39,995)
Owned by railroad (12,508)
Quadrangular lattice through truss (181)
Railroad (15,615)
Riveted (2,187)
Span length 125-175 feet (4,237)
Through truss (15,210)
Total length 175-250 feet (4,288)
Truss (33,007)
Union Pacific Railroad (2,377)
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