Thursday, April 16, 2009

Longest Bridge In World

The Lake Pontchartrain Causeway, or the Causeway, consists of two parallel bridges that are the longest bridges in the world by total length. These parallel bridges cross Lake Pontchartrain in southern Louisiana. The longer of the two bridges is 23.87 miles (38.42 km) long. The bridges are supported by over 9,000 concrete 8 miles (13 kms) south of the north shore. The southern terminus of the Causeway is in Metairie, Louisiana, a suburb of New Orleans. The northern terminus is at Mandeville, Louisiana.

Donghai Bridge ("Eastern Sea Great Bridge") is the longest cross-sea bridge in the world and the longest bridge in Asia. Having completed on December 10, 2005. And has a total length for the 32.5 kilometers and connects Shanghai and external yangshan deep-water port in China. Over the bridge is a bridge to a low level. There is also a cable-stayed doors to allow passage of large ships, with a greater extent than 420 m.

Based on the agreement signed on July 8, 1981 led to construction beginning next year. And placed the cornerstone of the November 11, 1982 by King Fahd of Saudi Arabia, Sheikh Isa bin Salman Al Khalifa of Bahrain; construction continued until 1986, when a combination of several bridges and dams have been completed. Officially opened the way for the use of November 25, 1986.

The Chesapeake Bay Bridge known as the Gulf Bridge is a major bridge over the double in the U.S. state of Maryland, along the Chesapeake Bay, it links between the state and the east and west coast regions. At 4.3 miles (7 km) in length, may extend the original in the world over the longest continuous steel structures in the water when it opened in in 1952. Bridge officially name William Preston hot, warm, Jr. Memorial Bridge after William Preston, son, Governor of the State of Maryland, carried out construction.

The bridge Vasco da Gama is a cable-stayed bridges, roads and bridges surrounded by the river extends to the Crown River near the Portuguese capital of Lisbon.with a total length of 17.2 kilometers , including 0.829 kilometres of the main bridge, 11.5 kilometers The bridges, and 4.8 kilometers of dedicated access routes. Its purpose is to alleviate congestion on the bridge to the other Lisbon,and previously to join the radiation from the highways is not relevant to Lisbon.

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