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Hoover Dam Bridge is America's newest wonderhttp://www.usatoday.com/news/nation/2010-10-18-hooverbypass18_ST_N.htmHoover Dam: Taming the Colorado River and Powering Millionshttp://www.voanews.com/learningenglish/home/Hoover-Dam-Taming-the-Colorado-River-and-Providing-Electricity-to-Millions-105833633.htmlBureau of Reclamation: Lower Colorado Region-Hoover Damhttp://www.usbr.gov/lc/hooverdam/Hoover Dam Bypass Projecthttp://www.hooverdambypass.org/default.htmCompleted in 1936, the Hoover Dam is a study in superlatives, even by American standards. Firmly planted in the Black Canyon of the Colorado River, the dam produces power for utility systems across Nevada, California, and Arizona, and is visited by over a million people each year. Recently, the Hoover Dam found a bit of competition for the attention of curious visitors in the form of a bypass bridge that glides 890 feet above the Colorado River. The official name of the structure is the Mike O'Callaghan-Pat Tillman Memorial Bridge, and it opened several weeks ago to immediate acclaim and widespread public interest. This bypass was first suggested in 1968, and funding for the bridge was secured in 2001, and construction began in 2005. The setting is tremendous, the structure has the world's tallest concrete columns of their kind, and it is the highest and longest arched concrete bridge in the Western hemisphere. Some have noted that the bridge was also a crucial project as it effectively redirected attention away from the Hoover Dam, which many have thought would be an ideal target for terrorists in the wake of 9/11. Commenting on the structure, the project manager Dave Zanetell noted, "Hoover Dam was the greatest engineering accomplishment in our nation's history. We had an opportunity to be as great for our generation."The first link will take visitors to a fine article from the Las Vegas Review-Journal from last Saturday about the new bridge. The second link leads interested parties to an additional news article about the structure which appeared in USA Today, complete with a time-lapse video of the bridge under construction. The fourth link whisks users away to a site from the Voice of America's "Learning English" initiative. Here visitors can learn about the history of the Hoover Dam and its construction. The fifth link takes visitors to the Bureau of Reclamation's site on the Hoover Dam, complete with information on tours of the dam and a photograph gallery. The final link leads to the homepage of the Hoover Dam Bypass Project, and visitors can look around the site to learn about the project history and some of its key participants.

Subjects:

  • Science > General
  • Science > Engineering
  • Science > Technology
  • Social Studies > General
  • Social Studies > United States History

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    NSDL_SetSpec_internetscout,Social studies -- United States history,Science,oai:nsdl.org:2200/20120928104426620T,NSDL,Engineering,Social studies,Science -- Engineering,Technology,Social Sciences,Science -- Technology

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