Hassayampa Bridge, Road bridge in Maricopa County, Arizona.

Hassayampa Bridge is a four-rib concrete deck girder bridge completed in July 1929 over the Hassayampa River in Maricopa County. Its seven spans of 45.7 feet (13.9 m) give a total span of 319.6 feet (97.4 m), and the deck is 24.2 feet (7.4 m) wide. Moulded concrete guardrails with arch-pierced walls and tapered cantilevered brackets line the roadway.

The bridge was constructed in 1929 by the firm Strong and Grant from Springville, Utah. It replaced an earlier timber crossing from 1915 that had originally served this river passage.

The structure displays design elements typical of the 1920s, with its four-rib concrete construction and molded concrete railings. These details reflect engineering methods that were common across the United States during that era.

The bridge is located on Old U.S. Highway Route 80 and is accessible to regular vehicle traffic. Since it is a historic structure on a roadway, visitors should drive carefully and be aware of traffic conditions.

The bridge was documented by the Historic American Engineering Record, which recorded it in measured drawings and photographs. It was also slated for demolition twice, in 1983 and again in 1993, yet survived both threats and remains in use on the old route.