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| Hoover Dam Bypass celebrates completion  More than nine years in the making, the Hoover Dam Bypass, which greatly enhances mobility in the vicinity of the historic Hoover Dam, was celebrated with public ceremonies on the new bridge Saturday. It will open to traffic in November.On July 12, 2001, the Federal Highway Administration, Central Federal Lands Highway Division (CFLHD) awarded a contract to HDR Engineering, Inc. to provide design and construction support services for the Hoover Bypass Project. Under the management of CFLHD, HDR led an integrated team of professionals from HDR, T.Y. Lin International, and Jacobs Engineering (formerly Sverdrup) which was collectively known as the Hoover Support Team. Several supporting specialty subconsultants completed the design team. The work included design of roadway grading and paving, bridges, wildlife crossings, drainage, lighting, utilities, traffic management systems, pedestrian accommodations, interpretive exhibits, high-voltage transmission line relocations and a signature long-span bridge over the Colorado River. It also included geotechnical engineering, survey and mapping, and corridor architectural design. HDR was responsible for designing the Nevada approach, including a high level crossing of Gold Strike Canyon, two grade separations with existing U.S. 93, a grade separation with the Lower Portal Road and the Nevada interchange with existing U.S 93, which will become the Hoover Dam access road. HDR subconsultant Jacobs Engineering designed the Arizona approach consisting of a major bridge near Sugarloaf Mountain and the Arizona interchange. The landmark river bridge, featuring the longest concrete arch in North America, was designed by a joint team led by T.Y. Lin with major support from HDR. The 3.5-mile corridor includes 1 mile of approach roadway in Arizona, 2.1 miles of roadway in Nevada and a 1, 900-foot-long crossing of the Colorado River approximately 1, 500 feet downstream from the dam. write your comments about the article :: © 2010 Construction News :: home page |