TechFirst steel box girder installed on China’s largest-span cross-sea bridge
The first steel box girder has been installed on the Shuangyumen Bridge in Ningbo, Zhejiang, marking the start of steel girder erection. With a 1,768-meter main span, it is China’s largest-span bridge of its type and the world’s largest single-span suspension bridge using steel box girders.
C
China News Service★★☆☆☆2026-09-16 03:48Original
First steel box girder installed on China’s largest-span cross-sea bridge