Construction on the nearly 2,000 foot long bridge (with a 1,060 foot twin-rib concrete arch) began in late January 2005 and traffic began using the Hoover Dam Bypass on October 19, 2010. This signature bridge spans 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 (info taken from http://www.hooverdambypass.org/).
This is what we saw! Taken from my camera...
Here are more "professional" photos...although no pictures do this justice. This enormous structure must be seen in person!!!
above two images from TravelPod
image via flickr
image via roadtraffic-technology