Cairo Ohio River Bridge (Alexander County, Illinois)Built 1937; rehabilitated 1979
Continuous through truss over the Ohio River on US 51/60 between Cairo, Illinois and Wickliffe, Kentucky
Open to two-lane traffic
Cobden Bridge (Union County, Illinois)
Lost through truss bridge over the Illinois Central Railroad on Old US 51 in Cobden
Replaced in 1997
Lost through truss bridge over the Illinois Central Railroad on Old US 51 in Cobden
Replaced in 1997
Illinois River I-39 Bridge (La Salle County, Illinois)Built 1987
Steel through arch bridge over the Illinois River on I-39/US 51 near La Salle in Oglesby
Open to four lanes of traffic
Rock River Bridge (Rock County, Wisconsin)
Built 1938; rehabilitated 1969
Deck truss bridge over Rock River on US 51
Open to traffic
Built 1938; rehabilitated 1969
Deck truss bridge over Rock River on US 51
Open to traffic
Wisconsin River Bridge (Marathon County, Wisconsin)
Built 1915
Concrete arch bridge over Wisconsin River on Eastbound US 51/WI 52 in Wausau
Open to traffic
Built 1915
Concrete arch bridge over Wisconsin River on Eastbound US 51/WI 52 in Wausau
Open to traffic