Mike O'Callaghan - Pat Tillman Memorial Bridge (Hoover Dam Bypass) Complete


The Mike O’Callaghan – Pat Tillman Memorial Bridge (Fig. 17) is complete and officially opened to traffic. Residents, community members, and visitors turned out en masse on October 14, 2010 for the dedication ceremony by federal and state dignitaries from Nevada and Arizona for the 1,900-foot engineering marvel perched 890 feet above the Colorado River. The western hemisphere’s longest single-span concrete arch bridge with a 1060-foot main span is part of a $240 million, four-lane bypass that re-routes traffic for 3.5 miles from the two-lane bottleneck on U.S. 93 across the Hoover Dam. The new Hoover Dam bypass bridge will shorten the route for commercial shippers along the major trade corridor and reduce traffic congestion.

Project Details


Central Federal Lands Highway Division, FHWA

Bridge Design:



Obayashi / PSM Construction USA, Inc. (a Joint Venture)

Construction Engineer:


Form Travelers for Cast-in-Place Segments:


Post-Tensioning Materials:


Stay Cables: