The Park Avenue Bridge in Clifton, Arizona brings Park Avenue over the San Francisco River and was long the one link between east and west sides of the town. It is a historic through truss bridge, built during 1917–18, and is listed on the U.S. National Register of Historic Places. It has also been known as Clifton Bridge and as Riley Bridge. It is significant historically as the only pinned Parker vehicular truss in the state of Arizona. At the time of its NRHP listing, in 1988, it was in original condition including having a creosoted timber deck. and It was individually listed on the National Register of Historic Places (NRHP) in 1988. It was also included as a

contributing structure In the law regulating historic districts in the United States, a contributing property or contributing resource is any building, object, or structure which adds to the historical integrity or architectural qualities that make the historic distric ...

within the Clifton Townsite Historic District, a historic district listed on the NRHP in 1990.

References

{{National Register of Historic Places Road bridges on the National Register of Historic Places in Arizona Bridges completed in 1918 Buildings and structures in Greenlee County, Arizona History of Greenlee County, Arizona Tourist attractions in Greenlee County, Arizona 1918 establishments in Arizona National Register of Historic Places in Greenlee County, Arizona Individually listed contributing properties to historic districts on the National Register in Arizona Steel bridges in the United States Parker truss bridges in the United States