China to Build World Longest Cable-stayed Bridge

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Last updated at: (Beijing Time) Tuesday, April 02, 2002

China to Build World Longest Cable-stayed Bridge

China is going to build the world's longest cable-stayed bridge with main span stretching over 1088 meters at Nantong in Jiangsu, it will be on a larger scale than Japan's Tatara Bridge (890 meters), world current longest cable-stayed bridge. According to estimates, the bridge will cost 6 billion yuan and is expected to be completed in 5 years.

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China is going to build the world's longest cable-stayed bridge with the main span stretching over 1088 meters at Nantong in Jiangsu, it will be on a larger scale than Japan's Tatara Bridge (890 meters), world current longest cable-stayed bridge.

Called Sutong bridge, it lies in between Nantong farm and Xuliujing in Suzhou, it is 280 km away from Nanjing in the west and 100 km away from the sea entrance of the Yangtze river in the east.

The total length of the bridge is 7600 meters, the main span of the two-tower cable-stayed bridge is 1088 meters, it can satisfy the all-weather passage of ships with the No. 4 and No. 5 containers. The bridge will be designed according to 6-lane highway standard. The designed speed is at 100 km/h.

Because the main span is 198 meters wide than Japan's Tatara Bridge, it is also 70 meters wide than Hong Kong's cable-stayed bridge which is under design, so it will become world's largest cable-stayed bridge during quite a long period of time.

According to estimates, Sutong Bridge will cost 6 billion yuan with registered capital accounting for 35 percent of the total investment to reach 2.2 billion yuan, it is expected to be completed in 5 years.

By PD Online Staff Li Yan

Cable-stayed Bridge

A typical cable stayed bridge is a continuous girder with one or more towers erected above piers in the middle of the span. From these towers, cables stretch down diagonally (usually to both sides) and support the girder.

Steel cables are extremely strong but very flexible. Cables are very economical as they allow a slender and lighter structure which is still able to span great distances.

Though only a few cables are strong enough to support the entire bridge, their flexibility makes them weak to a force we rarely consider: the wind.

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