U.S. Route 93 in Nevada portion of abandoned railroad right-of-way. A shopping center now sits where the original truck bypass alignment once ran. US 93 was realigned again on October 19, 2010, when the Mike O'Callaghan – Pat Tillman Memorial Bridge over the Black Canyon of the Colorado River opened to vehicular traffic. With that, the highway no longer passes over Hoover Dam, and the state-maintained portion of the replaced route was renamed as Hoover Dam Access Road (SR 172). In 2011, US 93 from Buchanan Boulevard to the Nevada terminus of the Hoover Dam Bypass was expanded to four through lanes with dedicated turn
Glen Canyon Dam about 5 million people in Arizona, Colorado, Nevada, New Mexico, Utah and Wyoming, and is sold to utilities in these states as 20-year contracts. Power sales have been managed by the Western Area Power Administration since 1977. Glen Canyon Dam generates enough power to offset 6.7 billion pounds (3 billion kg) of carbon dioxide emissions each year. However, drought conditions in the 21st century have reduced the amount of hydropower available from Glen Canyon Dam. An unusual feature of the Glen Canyon power plant is the Kentucky bluegrass lawn occupying the crescent between the dam and hydroelectric plant. At the