World’s Tallest Bridge In China Clears Safety Test After Trial With 96 Trucks

The Huajiang Grand Canyon Bridge, the world’s tallest bridge, has successfully passed its final safety test and is set to open to the public in September. Towering 625 metres above the canyon floor and stretching 2,900 metres in length, the bridge is located in the dramatic karst landscape of Guizhou, a region already known for engineering marvels.

According to China Daily, a major static load test was conducted between August 21 and 25, involving 96 heavy trucks weighing a combined 3,360 metric tons. More than 400 sensors were used to monitor the bridge’s structure, including its main span, towers, and cables, for any movement or stress. Engineers confirmed the bridge meets all safety and performance standards.

With a main span of 1,420 metres, it will also hold the record for the longest span bridge in mountainous terrain. Officials noted the project's complexity, citing challenges such as steep terrain, temperature control during concrete pours, and high-altitude wind conditions.

Despite these difficulties, the bridge was completed ahead of schedule. Once open, it will cut travel time between Liuzhi and Anlong from two hours to just two minutes, significantly enhancing regional connectivity and tourism. China currently holds eight of the world’s ten tallest bridges, all located in Guizhou.