Harrison Road Camelback Through Truss Bridge, Spanning Great Miami River at Harrison Road (Route 457), Miamitown, Hamilton County, OH

Significance: The Harrison Road Camelback Through Truss Bridge was built in 1894 by the King Bridge Company, one of the largest and most important bridge building concerns in the United States during the late 19th century. The company's reputation was made by the bowstring arch truss for which Zenas King was granted several patents. However, the bowstring design was virtually abandoned after 1880 and replaced with more conventional designs such as the Pratt and Parker. This is a good example of the long span metal truss bridge that the company's founder, Zenas King, became interested in towards the end of his life. The bridge is listed as a "selected bridge" in the Ohio Department of Transportation's Ohio Historic Bridge Inventory Evaluation and Preservation Plan.
Survey number: HAER OH-49
Building/structure dates: 1894 Initial Construction