10. Seven Mile Bridge
The Seven Mile Bridge, in the Florida Keys, runs over a channel between the Gulf of Mexico and the Florida Strait, connecting Key Vaca (the location of the city if Marathon, Florida) in the Middle Keys to Little Duck Key in the Lower Keys. Among the longest bridges in existence when it was built, it is one of the many bridges on US 1 in the Keys, where the road is called the Overseas Highway.9. San Mateo-Hayward Bridge
The San Mateo-Hayward Bridge (commonly called San Mateo Bridge) is a bridge crossing California's San Francisco Bay in the United states, linking the San Francisco Peninsula with the East Bay. More specifically, the bridge's western end is in Foster City, the most recent urban addition to the eastern edge of San mateo. The eastern end of the bridge is in Hayward. The bridge is owned by the state of California, and is maintained by Caltrans, the state highway agency.8. Confedration Bridge
The Confederation Bridge (French: Pont de la Confederation) is a bridge spanning the Abegweit Passage of Northumberland Starit, linking Prince Edward Island with mainland New Brunkswick, Canada. It was commonly referred to as the "Fixed Link" by residents of Prince Edward Island prior to its official naming. Construction took place from all the fall of 1993 to the spring of 1997, costing $1.3 billion. The 12.9 kilometre (8 mile) long bridge opened on 31 May 1997.7. Rio-Niteroi Bridge
The Rio-Niteroi Bridge is a reinforced concrete structure that connects the cities of Rio de Janerio and Niteroi in Brazil. Construction began symbolically on August 23, 1968, in the presence of Queen Elizabeth II of the United Kingdom and Prince Philip, Duke of Edinburgh, in their first and thus far only visit to Brazil. Actual work begun in January, 1969, and it opened on March 4, 1974. Its official name is "President Costa e Silva Bridge", in honor of the Brazilian president who ordered its construction. "Rio-Niteroi" started as a descriptive nickname that soon became better known than the official name. Today, hardly anyone referes to it by its oficial name.6. Penang Bridge
The Penang Bridge (jambatan Pulau Pinang in Malay) E 36 is a dual-carriageway toll bridge that connects Gelugor on the island of Penang and Seberang Prai on the mainland of Malaysia on the Malay Peninsula. The bridge is also linked to the Norht-South Expressway in Prai and Jelutong Expressway in Penang. It was officially opened to traffic on September 14, 1085. The total length of the bridge is 13..5 (8.4 miles), making it among the longest bridges in the world, the longest bridge in the country as well as a national landmark. PLUS Expressway Berhad is the concession holder which manages it.5. Vasco da Gama Bridge
The Vasco da Gama Bridge (Portuguese: Ponte Vasco da Gama, pron is a cable-stayed bridge flanked by viaducts and roads that spans the Tagus River near Lisbon, capital of Portual. It is the longest bridge in Europe (including viaducts), with a total length of 17.2 km (10.7 miles), including 0.829 km (0.5 miles) for the main bridge, 11.5 kms (7.1 miles) in viaducts, and 4.8 km (3.0 miles) in dedicated access roads. Its purpose is to alleviate the congeston on Lisbon's other bridge (25 de Abril Bridge), and to join previously unconnected motorways radiating from Lisbon.4. Chesapeake Bay Bridge
The Chesapeake Bay Bridge (commonly known as the Bay Bridge) is a major dual-span bridge in the US State of Maryland; spanning the Chesapeake Bay, it connects the state's Eastern and Western Shore regions. At 4.3 miles (7km) in length, the original span was the world's longest continous over-water steel structure when it opened in 1952. The bridge is officially named the William Preston Lane, Jr. Memorial Bridge after William Preston Lane, Jr. who, as governor of Maryland, implemented its construction.3. King Fahd Causeway
The King Fahd Causeway is multiple dike-bridge combination connecting Khobar, Saudi Arabia, and the island nation of Bahrain. A construction agreement signed on July 8, 1981 by King Fahd of Saudi Arabia and Sheikh Isa bin Salman al-Khalifa of Bharain; construction continued until 1986, when the coombination of sevral bridges and dams were completed. The causeway officially opened for use on November 25, 1986.2. Donghai Bridge
Donghai Bridge (literally "East Sea Grand Bridge") is the longest cross-sea bridge in the world and the longest bridge in Asia. It was completed on December 10, 2005. It has a total length of 32.5 kilometers (20.2 miles) and connects Shanghai and the offshore Yangshan deep-water port in China. Most of the bridge is a low-level viaduct. There are also cable-stayed sections to allow for the passage of large ships, largest with span of 420 m.1. Lake Pontchartrain Causeway
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.http://www.worldamazinginformation.com/2008/04/ten-longest-bridges-in-world-amazing.html
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