The following are the longest bridges in the world currently:
1. The Danyang-Kunshan Grand Bridge, China
The bridge is 164.8km long, located between Shanghai and Nanjing. It is meant for a high speed rail, across the Yangtze River delta, all the way from Danyang to Kunshan.
It was opened officially on 2011, after a construction process which took 4 years, costing about 8.5 Billion dollars. It holds the Guinness world record as the longest bridge as of June 2011.
2. Tiajin Grand Bridge, China
The bridge is 113.7km long running between Langfang and Qingxian part of the Beijing -Shanghai railway. It is the second longest bridge in the world, as recorded by the Guinness world record in 2011. It runs between the towns Langfang and Qingzian, its main location being Hebei town in Tianjin. It took four years to complete.
3. The Weinan Weihe Grand bridge, China
This viaduct is a part of the Zhengzhou-Xi’an high speed railway. It is 79.7km long, crossing the Wei River twice, and several other rivers, and other transport passes. It has been standing the longest bridge since its completion in 2008, but was surpassed by two others after their construction in 2010. It was officially opened on 2010. It is also meant for high-speed rail.
4. Bang Na Expressway, Thailand
This overpass was completed in January 2000. It is 55km long, and 27metres wide. It was designed by Jean Muller (USA). It does not cross a big water mass in most of its length. It only crosses over the Bang Pakong River, and it is open for road traffic.
5. Beijing Grand Bridge, China
This bridge is 48.15km long, and it’s located in Beijing, connecting Beijing to Shanghai. It serves the High-speed railway transport. It was completed in 2010, and was opened officially in 2011.
6. Manchac Swamp Bridge
The Manchac Swamp Bridge is a twin concrete trestle bridge in the US state of Louisiana. It is located around Lake Pontchartrain, a lake well known for its incredibly long bridges, as you will see in a moment. Although the bridge is totally safe to drive on, Louisiana legend says that the bridge is haunted by a Cajun werewolf known as a “Rougarou” and a voodoo princess. However, despite these spooky tales, the only thing that drivers should be cautious of is not to get too close to the alligators that make a home on the waters under the bridge.
7. Lake Pontchartrain Causeway
The Lake Pontchartrain Causeway, or the Causeway, is considered to be the longest bridge in the United States and the longest bridge in the world over water (continuous). It consists of two parallel bridges crossing Lake Pontchartrain in southern Louisiana, United States. The longer of the two bridges is 23.83 miles (38.35 km) long. There was some controversy with Guinness over the title of the longest bridge over water. For over 10 years, Lake Pontchartrain Causeway was listed in the book for being the longest bridge over water.
However, in 2011, Jiaozhou Bay Bridge in China was given the title of the longest bridge over water. Many Lake Pontchartrain record holders in the U.S. disputed this with Guinness stating that the causeway ran for 23.79 miles over water; therefore, it was the longest. Guinness ended the controversy by creating two categories, one for the longest bridge (continuous), which was given to Lake Pontchartrain, and longest bridge (aggregate), which was given to Jiazhou.