The Hoover Dam Bypass, was the first concrete-steel composite arch bridge built in the United States, and includes the longest concrete arch in the Western Hemisphere. Opened in October 2010, the bridge provides a crossing of the Colorado River for U.S. Route 93, linking Nevada and Arizona 1,600 feet downstream from the Hoover Dam.
Over the course of seven contracts, Nicholson provided a variety of geotechnical construction services on the project. Nicholson designed, drilled and installed anchors and micropiles for the cableway tower cranes used to carry people and materials at the bridge site. On the project, a total of 190 anchors and 32 piles were installed. Access was extremely difficult on this project.
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