IA 57

Beaver Creek Bridge (Butler County, Iowa)
Built 1926; rehabilitated 1957
Girder bridge over Beaver Creek on US 20
Open to traffic

IA57 Overpass (Hardin County, Iowa)
Built 1932, Removed April 2013
Deck plate girder bridge over Illinois Central Railroad on IA57 / Old US 20 in Ackley
Replaced by a new bridge