ISHC Experimental Design

120th Street Bridge (Muscatine County, Iowa)
Built 1937; Replaced 2020
Steel rigid frame bridge over an unnamed creek on 120th Street
Replaced by a new bridge

2nd Avenue Overpass (Polk County, Iowa)
Built 1936; rehabilitated 1985
Rigid frame bridge over Birdland Drive on 2nd Avenue in Des Moines
Open to traffic

Hockeys Slough Bridge (Muscatine County, Iowa)
Built 1937
Concrete Rigid Frame bridge over Hockeys Slough on Bancroft Avenue
Open to traffic