Huajiang Grand Canyon Bridge, the tallest bridge in the world and the largest span bridge in a mountainous area, recently opened to traffic in Guizhou Province. The project was invested and constructed by China Gezhouba Group Co., Ltd. and China Gezhouba Group Road & Bridge Co., Ltd., both subsidiaries of China Energy Engineering Group Co., Ltd.
Huajiang Grand Canyon Bridge in Guizhou Province is the world’s tallest bridge and the bridge with the largest span in a mountainous area. [Photo/sasac.gov.cn]
A critical project of the Liuzhi-Anlong Expressway, the bridge is 2,890 meters long, with a deck height of 625 meters above the water surface. It is 60 meters higher than the First Beipan River Bridge in southwest China that connects Guizhou and Yunnan provinces, establishing a new world record for the tallest bridge. The span of its main bridge is 1,420 meters, ranking first in the world among bridges in mountainous areas.
The Huajiang Grand Canyon Bridge adopts a streamlined steel truss with the water-drop-shaped section and a two-meter-high central stabilizer to resist wind, reducing 30 percent of wind load and 90 percent of crosswise wind-induced vibration. The builder also uses Doppler Lidar for all-weather monitoring of the wind field, providing precise data for construction and operation.
The operation of the bridge marks the completion of the entire expressway. It connects the main lines of several national highways, and reduces the travel time between Zhenfeng County and Guanling County, which lie on the opposite sides of the canyon, from two hours to two minutes.
(Executive editor: Yuan Ting)
