STRACK

The Huajiang Canyon Bridge in China, the world's highest bridge at 625 meters, releasing a massive wall of water. During excavation of the tunnel at the bridgehead, the construction team encountered a flow of karst groundwater. Rather than discharging it from the tunnel as waste, the engineers diverted the water into a newly built reservoir at the bridgehead with a capacity of 4,000 cubic meters (140,000 cu ft). The captured water supplies the bridge's service area, irrigates farmland and orchards on the Guanling side of the canyon, and, using the surplus, feeds a water-curtain feature mounted along the deck." The bridge doubles as an irrigation system and this is essentially the overflow.