The Danyang-Kunshan Grand Bridge is the world’s longest bridge. It is a 164.8-kilometer long viaduct on the Beijing-shanghai high-speed railways. The bridge is located on the rail between Nanjing and Shanghai in east China. It was completed In 2010 and opened in 2011 and took four years and 10,000 people to build this marvelous structure and cost about $ 8.5 billion. The ground bridge currently holds the Guinness world record for the world’s longest bridge in any category.
The bridge averages about 100ft off the ground. The bridge runs roughly parallel to the Yangtze River, about 8 to 80km south of the River. It crosses low rice paddies, part of a Yongtze River delta with just a few miles of the bridge actually crossing the open water of Yongcheng Lake in Suzhou.
The world’s longest road bridge is 55km long Bang Na Expressway located in Thailand. It is a six-lane elevated highway that crosses only a bit of water of the Bang Pakong River. Construction of this huge bridge took 1,800,000 cubic meters of concrete.
The world’s longest continuous bridge over water is the Lake Pontchartrain Causeway in the southern Louisiana. The bridge is actually two parallel bridges, with the longer of the two measuring 38km, the bridges are supported by 9500 concrete pilling.
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In 2011, China claimed that its Jiaozhou Bay Bridge was the longest spanning water bridge. So Guinness world records decided to split the title into two parts, stating that 42.5km long JiaozhouBayy bridge is the longest bridge over water in aggregate, while the Pontchartrain bridge is the world’s longest continuous bridge.