ISHC Experimental Design
120th Street Bridge (Muscatine County, Iowa)
Built 1937; Replaced 2020Steel rigid frame bridge over an unnamed creek on 120th StreetReplaced by a new bridge
2nd Avenue Overpass (Polk County, Iowa)
Built 1936; rehabilitated 1985Rigid frame bridge over Birdland Drive on 2nd Avenue in Des MoinesOpen to traffic
Hockeys Slough Bridge (Muscatine County, Iowa)
Built 1937Concrete Rigid Frame bridge over Hockeys Slough on Bancroft AvenueOpen to traffic