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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.
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