In the Dadong River Grand Canyon in Wulong, Chongqing, there is a 300-meter-high suspended iron chain bridge spanning the canyon, which is shocking! What is even more surprising is that this iron cable bridge has no piers and no cable-stayed ropes. It only relies on 4 sets of ropes to provide horizontal tension, and it can withstand the passage of more than 40 tons of trucks
The cable car bridge, with a span of 245.52 meters and a total width of 4.3 meters, was completed in four months. Without any pillars or stay cables, the bridge is supported by 155 unbonded steel strands placed at the bottom and both sides of the bridge deck and can carry trucks weighing up to 45 tons.
The Yaozhan Iron Chain Bridge was the only access route built by local villagers when they were mining in the 1940s, and today we are introducing a bridge built for the double-track construction of the Yuxiang Expressway in 2021(expected to be finished within 4-6 years)
Not only these, the construction of this cableway bridge also saves a mixing station and a steel bar processing plant for the Shuangbao Bridge Project, saves 15.46 mu of land acquisition, and reduces the felling of about 2,773 trees, which greatly reduces the damage to vegetation.
At present, because the iron chain bridge is only a bridge for the construction of Yuxiang Expressway(especially Shuangbao Bridge)no outside vehicles are allowed to enter. However, according to the construction personnel, after the project is completed, the bridge will be retained to build local tourism and other projects
Yi Qiang said that the speed of the truck was required to be less than 10 km/h when passing over the bridge, and he drove over the bridge without any trouble. It transports concrete across the bridge three or four times a day. In order to ensure a safe ride on the cable car bridge, the bridge is equipped with speed reminders and wind speed monitoring, and the bridge is regularly examined.
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