The high Mike O'Callaghan–Pat Tillman Memorial Bridge

The Mike O'Callaghan–Pat Tillman Memorial Bridge, nicknamed as the Hoover Dam Bypass, is an arch bridge that spans the Colorado River, in USA. Stay away if you're scared of heights. At 880 feet over the Colorado River, it is the second-highest bridge in the United States and the highest concrete-arch bridge anywhere. It's one of the most spectacular bridges in the world.

The bridge, located between the states of Arizona and Nevada is 579 m long and was opened in 2010. It spans the Colorado River at Black Canyon and is part of U.S. 93. The bridge incorporates 30,000 cubic yards of concrete and 16 million pounds of steel. The bridge connects Arizona and Nevada, and creates a faster route across the river. It was named after Mike O’Callaghan, a former Nevada governor and Pat Tillman, an Arizona Cardinals football player who joined the Army and was killed in Afghanistan. Pedestrian suicides  pose a growing problem to bridge officials, who are evaluating design modifications to prevent future tragedies.
Pic: Rob Verheijen