Hoover Dam Bypass - Colorado River Bridge

The construction contract for the Colorado River Bridge, was awarded to the joint venture partnership of Obayashi Corporation and PSM Construction USA, Inc., in October of 2004 for US$ 114 million. Construction began in early 2005 and is expected to be completed in 2010. When completed, the 2000 ft-long (610 m) Colorado River Bridge will span the Black Canyon (about 1500 ft/457 m south of the Hoover Dam), connecting the Arizona and Nevada Approach highways nearly 900 ft (274 m) above the Colorado River. The construction requirements and challenges are as difficult as any in the world.