Rocky River Bridge, Spanning Beaver Dam River, Rocky River, Cuyahoga County, OH

Significance: At the time of its construction, the Rocky River Bridge, with a clear span of 280 feet, was the longest concrete arch in the world. Because of the ongoing development of the concrete arch, the record length of the Rocky River span was shortlived, but it retains its place as the longest unreinforced concrete arch in America, exceeding the Walnut Lane Bridge at Philadelphia by 47 feet.
Survey number: HAER OH-21