Longjiang Bridge, Suspension bridge in Baoshan, Yunnan Province, China.
The Longjiang Bridge is a white-painted steel box girder suspension bridge with two towers, 169.7 m on the Baoshan bank and 129.7 m on the Tengchong bank, carrying a 33.5 m wide deck 280 m above the Long River. Its main span of 1,196 m is flanked by 320 m side spans, and the deck carries a sign reading "龙江大桥".
Work on the Longjiang Bridge began on 23 May 2011 under the China Communications Second Highway Engineering Bureau. The last steel box girder was lifted into place on 30 October 2015, and a load test with 68 trucks of 35 tonnes each was passed on 5 April 2016. The bridge opened to traffic on 1 May 2016, completing the Baoshan–Tengchong Expressway.
The bridge has become an engineering landmark in China, symbolizing infrastructure progress and showcasing advances in connecting remote mountainous regions with economic centers.
The bridge carries the S10 Baoshan–Tengchong Expressway across the Long River Valley, with a design speed of 80 km/h. A service area sits on the Tengchong bank, and a visitor walkway opened there for a 2018 Spring Festival trial. The crossing removed the 13.5 km detour down to the valley floor.
The bridge deck sits 280 metres above the Long River, while the taller Baoshan-side tower rises 169.7 metres and the Tengchong-side tower 129.7 metres, putting the tower tops about 450 metres above the water. During construction, a drone was used to fly the first pilot cable across the valley, the first time this was done for a long-span suspension bridge in China.
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