The Mike O’Callaghan – Pat Tillman Memorial Bridge outside Boulder City, also known as the Hoover Dam Bypass Bridge, was the first concrete-steel composite arch bridge built in the United States and includes the longest concrete arch in the Western Hemisphere.
Opened on October 19, 2010, the bridge provides a crossing of the Colorado River for U.S. Route 93, linking Nevada and Arizona 1,600 feet (490 m) downstream from the Hoover Dam. It is located approximately 30 miles (48 km) southeast of Las Vegas. The bridge is the highest in the nation, at 840 feet (260 m) above the Colorado River.
The walking path, accessible from the Nevada side of the bridge, is spectacular for viewing and photographing the magnificence of the Hoover Dam, Lake Mead, and the high walls of Black Canyon. To reach the walking path’s parking area, proceed as if you are going to the Hoover Dam, not the Bypass Bridge. The walking path turn off is clearly marked, parking is free, and portable toilets are available.
Driving directions from Las Vegas:
Take US 93 South toward Boulder City. Once there, you will have two ways to get to the Dam. For the quickest route, at Buchanan Blvd. stay on US 93 (to the left) and follow the signs to Hoover Dam. If you want to see historic downtown Boulder City (a great place to grab a bite and peruse a variety of cool shops), go straight onto Nevada Way and follow the signs to go through town.