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
Replaced by a new bridge

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