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Hoover dam bypass_bridge2
The document discusses the new Mike O'Callaghan–Tillman Memorial Bridge that was built over the Colorado River between Nevada and Arizona. Some key details include: - The bridge connects Nevada and Arizona and passes over the Hoover Dam. - It was built using a new method involving reusable sliding formwork and suspension cables for temporary support during construction. - The bridge is 1900 feet long with a main arch span of 1060 feet and height of 840 feet above the Colorado River. - It opened in October 2010 at a cost of $114 million.
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Hoover dam bypass_bridge2
- 1. New Hoover DamBridge Between Nevada and Arizona
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- 4. Hoover Dam Hoover DamBridge Picture Title Click
- 5. Nevada State line Time zoneline Arizona Hoover Dam Hoover Dam Bridge Picture Title Click
- 6. New method tobuild a reinforced concrete bridge without the conventional temporary shoring
- 7. The suspension cablesfor temporary support
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- 9. High line cable conveyor Reusablemetal sliding formwork
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- 11. The concrete Archdesigned for carrying the temporary and permanent load
- 14. Conventional scaffold system,too expense ! !
- 15. Steel strut Reinforced concretetwin Arch connected by steel struts
- 20. Steel Box Girdersand concrete roadway deck
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- 29. Lower twin archwas completed
- 30. Cut off thesuspension cables, when concrete up to it’s strength
- 32. Reusable metal sliding formwork forreinforced concrete columns
- 33. The upper deck columns,build on the top of the lower twin arch
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- 36. Prestressed concrete and steelbox composited Girders
- 38. Hoover Dam Bridgeover Colorado River
- 39. Hoover Dam BypassBridge Opening date : Oct. 19, 2010
- 40. The center lineof Colorado River and Hoover Dam Bridge was State Line of Nevada and Arizona, and also a Time Zone divided line of Pacific and Mountain Time, If drive from west to the east, when you pass the bridge, you will enter Arizona and gain one extra hour. Click
- 41. Name of theBridge • In the beginning called : Hoover now the official name was : Dam Bypass Bridge • Mike O’Callaghan – Tillman Killey Memorial Bridge Mike O'Callaghan – Joined the Marines at sixteen, 1952 he lost part of his left leg in the battle of Korean War, 1971 to 1979 was Governor of Nevada, later he was the Executive Editor at the Las Vegas Sun newspaper, he died on March 5, 2004. • Tillman Killey – Arizona famous NFL football player, he gave up his well paid job and joined the army, he died by a friendly fire in Afghanistan on April 22, 2004. Click
- 42. Hoover Dam Bridgetechnical information • • • • • • • • • Designer : T. Y. Lin International ( 林同棪 ) 1988 finished the investigation and environmental report. The design work start in July 2001 & finish two years later. Bridge length : 1900 ft ( 580 m ). Arch span : 1060 ft ( 320 m ). Bridge width : Four lane highway. Bridge height : 840 ft ( 263 m ) , 2 nd height of U.S. Bridge away from Hoover Dam : 1600 ft ( 550 m). Construction began on Feb. 2005 and completion on Oct.2010. Construction cost : 114 million. This is the first Concrete-and-steel composite arch bridge built in United State. Pedestrian access is provided over the bridge for tourists. Click
- 43. Hoover Dam technicalinformation • Hoover Dam was built after 1930 Great Depression, it was a project to increased job for American worker. • Type : Concrete gravity - arch dam • Top width : 45 ft ( 14 m), Base width : 660 ft ( 200 m) • Dam height : 726 ft ( 230 m), and 1245 ft (380 m) long • Construction begin at 1931 and finish at 1936 • Total cost : 49 million • Reservoir : 28,537,000 Acre ft (35,200 Kilo cubic meter) • Power annual generation : 4.2 Billion kwh • Worker : Hired 5500 construction workers, Chinese labor was forbidden by construction contract. • Hoover Dam was a tour spot, every year more than million of peoples visit there. Click