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.