Around 10 Years.... The concrete used in this could build a highway fromLosAngeles to New York
It takes tree years of hard work
1930
It takes approximately three years of hard work.
Chuck Norris
Hoover dam's width is 201.17 meters.
The Hoover dam weighs 6,600,000 tons. It took 3,250,000 cubic yards of concrete to build the dam itself
The United States.
Trees
The construction of the new bypass road to the Hoover Dam, known as the Hoover Dam Bypass or the Mike O'Callaghan-Pat Tillman Memorial Bridge, began in 2005 and was completed in 2010. The project took approximately five years to finish. The bridge was officially opened to traffic on October 19, 2010.
Hoover Dam is 1244 ft (379 m) long.
A total of 3,250,000 cubic yards.
black canyon on the Colorado river