Huajiang Canyon Bridge
Where all 22 expansion joints on the world's tallest bridge feature our multidirectional anti‑lifting system, designed to withstand complex canyon wind conditions and prevent debris accumulation that could compromise long‑term performance.
A New Record in Extreme Terrain
The Huajiang Canyon Bridge is a critical control project on the Liuan Expressway. With a total length of 2,890 meters, a main span of 1,420 meters, and a deck height of 625 meters above the water, the bridge will surpass the Beipan River Bridge (565 meters) to become the world's tallest bridge upon completion. It will also hold the record for the longest main span among bridges in mountainous regions worldwide.
Engineering at the Edge
Guizhou Province, the only province in China without a single expanse of flat terrain, is home to 1.26 million mountains and some of the deepest valleys in the country. It has the highest concentration of major canyon bridges in the world. Nearly half of the world's 100 tallest bridges are located in Guizhou. The Huajiang Canyon lies in a transitional zone between the Yunnan‑Guizhou Plateau and the Guangxi hills. The area is known for unpredictable wind patterns, humidity, and temperature fluctuations—conditions that pose challenges for bridge construction.
World's Tallest Bridge Under Construction: 625 meters from deck to water surface
World's Longest Span Among Mountain Bridges Under Construction: 1,420 meters main span
Designed for Complex Wind Conditions
The bridge is situated in a wind corridor where the canyon creates complex wind fields, including frequent gusts and vortices. Maximum recorded wind speeds in the area reach Typhoon 12 intensity. All 22 expansion joints on the bridge are supplied by ROABY, featuring the Multi-directional Anti‑warping displacement system. The four main bridge joints, Type RBQF2160 with a movement capacity of ±1,080 mm, accommodates longitudinal, transverse, vertical, horizontal, rotational, and axial movement. An anti‑warping sliding mechanism keeps the interlocking finger plates in continuous contact with the stainless steel sliding surface, allowing sand and debris to be pushed away during movement and preventing accumulation that could cause lifting over time.
Reducing Travel Time, Supporting Regional Growth
Upon completion, the bridge reduces travel time between Liuzhi Special Zone and Anlong County from three hours to 1.5 hours.
Key Figures
World's tallest bridge upon completion
Longest main span among bridges in mountainous regions worldwide
All expansion joints on the bridge supplied by ROABY
