Building the Hoover Dam Bridge [Slide Show]
Features |
More Science
A photographic essay captures the construction of a 1900-foot addition to the iconic American landmark
December 27, 2011
PEERING DOWN: This view from above the pylons looking down through the cables to the Arizona bridge deck. This is the first concrete-steel composite arch bridge in the U.S.
Image: Courtesy of Jamey Stillings (www.jameystillings.com)
?
Nearly one million people visit the 76-year-old Hoover Dam each year. In 2010 the historic site greeted visitors with a new addition: a 1,900-foot bridge. The Mike O?Callaghan - Pat Tillman Memorial Bridge is a part of the Hoover Dam Bypass Project, which was built to alleviate traffic on Route 93. "Today, the bridge is significant for its aesthetic, functional and geographic connection to the Hoover Dam and for its technical achievement, crossing the Black Canyon over the Colorado River with the longest concrete arch span in the western hemisphere," Stillings writes in his book. To see some of his photographs from this project, check out the following slide show.?
?