Colorado River Bridge Project Progressing Across Canyon

The joint venture contractor building the River Bridge, Obayashi Corporation and PSM Construction USA, Inc., is advancing construction of the 1,060 foot twin-rib concrete arch. The JV completed the design, fabrication and erection of the new highline system in January 2008. The system was developed specifically for this site and project requirements. Re-establishing the cableway system was a critical milestone to complete the project. Recently, the Contractor completed construction of steel tub girders and deck on the approach spans, and cast the first several segments at the end of each arch using a traveling form system. Upcoming work includes erecting two precast, segmental temporary towers at the ends of the approach span decks to anchor the cable support system for continued arch construction. Construction of the arch is expected to take approximately 14 months with completion scheduled in September 2009. Once the arch is complete and self-supporting, the cables and tower will be removed, and columns, pier caps and deck structure will be built on top of the arch completing the roadway.

Paving Contract Complete

The fourth phase of the Hoover Dam Bypass project is complete. The interim surfacing project was awarded to Las Vegas Paving Corporation in December 2007 was completed in June 2008. The project includes asphalt paving and guardrail on approximately 75% of the approach project length. Completion of the project minimizes the amount of remaining work to be done after the River Bridge is completed. The final project to open the bypass will include the short sections of remaining roadway tie-ins to the River Bridge and U.S. 93, as well as signing, striping, barrier, and pedestrian facilities on the entire bypass.