Labor behind the world's tallest bridge in Guizhou

Faced with extremely heavy bridge segments and canyon winds that sometimes exceeded force 12 on the Beaufort scale, the construction team independently developed heavy-duty climbing scaffolding and a smart cable hoisting system based on positioning from the Beidou satellite, capable of lifting steel truss girders weighing up to 215 tons with millimeter precision.

The welding requirements for the bridge project are stringent. Welders must hold a national certification. To address porosity in welds caused by strong canyon winds, the construction team innovated a windproof welding technology.