Located in Laibin City, Guangxi, the bridge has a total length of 3,787.424 meters, with a main bridge of 629 meters and a main span of 326 meters. It is a steel-concrete composite box girder cable-stayed bridge with twin towers and double cable planes, situated about 50 meters from the existing Liubei Expressway.
The bridge site features complex geological conditions, including underwater karst features like solution grooves, holes, and caves—often bead-like in distribution. Using geological CT scanning technology, the team identified subsurface features in advance and innovatively applied a combination of full-rotation and rotary drilling methods to precisely bore into complex strata. They avoided water and sand inrush risks, completing each main pier pile in 7 days—a record for Guangxi’s karst construction zones.
The main towers rise to 158 and 155 meters, with complex and highly inclined cross-sections requiring exceptional precision in vertical transport, climbing formwork techniques, and alignment control. The team introduced an intelligent climbing system to turn high-altitude tasks into indoor operations. An active transverse support system was also installed in the middle tower shaft to enhance stiffness and resist deformation in real time, achieving millimeter-level alignment accuracy.
The Liuzhou-Wuzhou Railway is a key segment of the Liuzhou–Guangzhou Railway, with a mainline length of 238.167 kilometers. It is a double-track electrified railway for both passenger and freight trains, designed for a target speed of 160 km/h. Once completed, it will improve the regional multi-modal transport network and expand freight and passenger corridors, promoting integration of Sichuan, Chongqing, Yunnan, Guizhou, and central Guangxi into the Guangdong–Hong Kong–Macao Greater Bay Area.
