Hoover Dam Bypass Bridge Prepares For Travelers : NPR   Leave a comment

Looking across water to dam, "Boulder (Ho...

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Hoover Dam Bypass Bridge Prepares For Travelers : NPR.

via Hoover Dam Bypass Bridge Prepares For Travelers : NPR.

via Hoover Dam Bypass Bridge Prepares For Travelers : NPR.

Officially named the Mike O’Callaghan-Pat Tillman Memorial Bridge, the 1,900-foot-long structure sits 890 feet above the Colorado River, about a quarter of a mile downstream from the Hoover Dam. The $240 million project to relieve vehicle traffic on the Hoover Dam began in 2003, and is scheduled to open to traffic sometime this week.

October 18, 2010

The Hoover Dam is an American landmark, perhaps the quintessential public works project, built during the Great Depression to provide power and irrigation to the West.

Now, the Hoover Dam has company: a new bypass bridge — another engineering marvel just downstream, spanning the Colorado River between Nevada and Arizona.

Mike O'Callaghan-Pat Tillman Memorial Bridge

Courtesy of Federal Highway AdministrationOnce open, the Mike O’Callaghan-Pat Tillman Memorial Bridge will be the shortest route between Phoenix and Las Vegas.

The bridge, almost 900 feet above the Colorado River, will open to traffic sometime this week. Highway officials are refraining from announcing the day to avoid a crush of vehicles trying to be the first to cross.

One of the highest bridges in the world, the Hoover Dam bypass bridge rises 726 feet above the bedrock. It has the longest single concrete arch in the Western Hemisphere — a semicircle that echoes the graceful curve of the dam upstream. The arch, curving downward on either side, supports the four-lane roadway on top. It took five years for it to literally come together, section by section from either side

 

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