Mederville Bridge, Spanning Volga River at County Road C5X, Mederville, Clayton County, IA
Significance: The Mederville bridge is technologically significant as one of the earliest open-spandrel arches built in Iowa where relatively few were ever built. Meant to be an economic alternative to the steel truss for wagon bridge construction, the open-spandrel concrete arch at Mederville spans 155', and is an example of the rather uncommon use of concrete arch technology employed in spanning wide crossings.
Unprocessed Field note material exists for this structure: N250
Survey number: HAER IA-79
Building/structure dates: 1918 Initial Construction
Building/structure dates: ca. 1990