Built 1937 (851)
Built during 1930s (12,246)
Canadian Pacific Railway (582)
Chicago, Milwaukee, St. Paul & Pacific Railroad (1,112)
Dakota, Minnesota, & Eastern Railroad (349)
Deck girder (6,397)
Girder (11,343)
I&M Rail Link (165)
Iowa (6,818)
| Iowa, Chicago & Eastern Railroad (230)
Monroe County, Iowa (52)
Open (41,198)
Owned by railroad (13,725)
Plate girder (8,874)
Railroad (16,665)
Soo Line Railroad (322)
Steel Trestle (152)
Tall Bridges (326)
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