A new bridge being built at the Hoover Dam

July 17, 2009 @ 7:31 pm

hoover-dam-bridge
Photo via The Daily Mail

Check out this amazing photo of a new bridge being built across the Hoover Dam. The bridge will be named the Mike O’Callaghan-Pat Tillman Memorial Bridge and will serve primarily to relieve the traffic going around the Hoover Dam (which you can see in the picture above). The bridge will be an extension of US Route 93 and will be a new connection between Arizona and Nevada.

Right now, the bridge looks like a suspension bridge, but by implementing some new bridge-building techniques, it will actually be supported only by the concrete arches beneath (the suspension cables will be removed after construction is complete). Construction on the bridge began in 2005 and is said to be completed sometime in 2010. This should be a site to see the next time I visit the Hoover Dam. :)

Tension cable testing at Columbia University

December 24, 2008 @ 2:51 pm

tension-columbia

City Room takes a brief tour of the Carleton Laboratory in Columbia University where tension cables for suspension bridges are tested to their limits. Inside their facilities, the lab can stretch, weather, heat, cool, and monitor the world’s largest suspension test cable. The research being done there is funding by the Federal Highway Administration and aims to improve bridges around the nation as well as prevent any disasters from happening. With the extreme testing the lab can simulate about a decade’s worth of use and torture in about 6 months.