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Danyang – Kunshan Grand Bridge (2010)

This 102.4 mile (164.8 km) bridge holds the title of world’s longest, taking four years to construct. Unlike most bridges, it is built in a viaduct design, spanning many valleys and connecting the cities of Shanghai and Nanjing in the Jiangsu province of China. The railway that the bridge connects spans 818 mi (1317 km), and is an engineering feat of its own.

The Construction of the Danyang–Kunshan Grand Bridge lasted four years, using a workforce 10 thousand people strong and resources costing $8.5 billion. In its final form, it is 164.8 kilometers long, and has a span of 260 feet and an average height from the ground of around 100 feet (31 meters). For the most way, it follows the flow of Yangtze river, between 5 to 50 miles (8 to 80 kilometers) to the south of it. Another notable part of the bridge is its 5.6 miles (9 kilometers) section that goes across open waters of Yangcheng Lake in Suzhou. This section was built on top of 2000 pillars, steel cables and is an impressive 450,000 ton steel structure. It has been constructed so sturdy so it can withstand not only natural disasters such as typhoons and earthquakes with a magnitude of eight on the Richter scale but also direct impacts from naval vessels that weigh up to 300,000 tons.

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