The Dayue high speed Dongting Lake bridge is located in the seven Li Mountain in Yueyang, Hunan province (the lower reaches of the Dongting Lake bridge, 3km Xiangjiang into the throat section of the Yangtze River), 2390 meters in length, Yueyang in the East and Junshan in the west, across the Xiangjiang river. The two sides of the river are Xiangjiang grade I terrace, which is a two span of 1480 meters (span ratio of the length of the bridge to the bridge of the dwarf). Asymmetric steel truss suspension bridge is the key control project of Hunan Dayue Expressway in Hangzhou, which ranks the top ten of the world in the field of the same type of super large bridge.