Casting History

From the Hoover Dam Visitors Center, you can see the cast-in-place arches of the Colorado River Bridge, taking shape downstream.

The new concrete bridge will offer a stunning view of Hoover Dam, Lake Mead, and the Colorado River, 900 feet below.

Jeff St. John, deputy project manager with contractor Obayashi/PSM JV, updated tour attendees on the status of construction on the Colorado River Bridge. The bypass project, including the bridge, is expected to be completed in 2010.

The 1,060 foot twin concrete arch spans are being cast-in-place with 10,000 psi concrete. When completed, the arches will be the longest in North America.

The composite concrete bridge will use more than 8 million lbs of reinforcing steel and nearly 7 million lbs of structural steel.

Luke Snell, professor at Arizona State University and CiM program director, explained concrete's role in the history of Hoover Dam.

Past and Future: A bronze 'high-scaler' statue honors workers who climbed steep cliffs and removed loose rock, during construction of Hoover Dam. In the distance, the new Colorado River Bridge will allow drivers and pedestrians to cross over the river, between Nevada and Arizona.

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