US 34

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Big Thompson No. 1 Bridge (Larimer County, Colorado)
Built 1937
Pony truss bridge over Big Thompson River on US 34
Open to traffic

Big Thompson No. 2 Bridge (Larimer County, Colorado)
Built 1937
Pony truss bridge over Big Thompson River on US 34
Open to traffic

Big Thompson No. 3 Bridge (Larimer County, Colorado)
Built 1933
Lost pony truss bridge over Big Thompson River on US 34
Replaced by modern bridge

Big Thompson No. 4 Bridge (Larimer County, Colorado)
Built 1933
Lost pony truss bridge over Big Thompson River on US 34
Replaced by modern bridge

BNSF US 34 Overpass (Lucas County, Iowa)
Steel stringer bridge over US34 on Railroad (BNSF)
Open to traffic

Plattsmouth Bridge (Cass County, Nebraska)
Built 1929; rehabilitated 2008
Through truss toll bridge over Missouri River on US 34 at Plattsmouth
Open to traffic

RI US34 Overpass (Jefferson County, Iowa)
Removed 1982.
Lost Pony/through plate girder bridge over US 34 on Railroad
Removed

UP US34 Overpass (Lucas County, Iowa)
Steel stringer bridge over US34 on Railroad (UP)
Open to traffic