بناء جسر

هندسة بناء جسر على نهر كولورادو يعبر سد هوفر بطريقة قوس خرساني شاهق بطول 1060 قدم

Construction of the Colorado River Bridge is advancing on the 1,060 foot twin-rib concrete arch.
The Colorado River Bridge is the central portion of the Hoover Dam Bypass Project.
Construction on the nearly 2,000 foot long bridge began in late January 2005 and the completion of the entire Hoover Dam Bypass Project is expected in Late 2010.
When completed, this signature bridge will span the Black Canyon (about 1,500 feet south of the Hoover Dam), connecting the Arizona and Nevada Approach highways nearly 900-feet above the Colorado River .