Yibin Jinsha River Dual-Use Railway and Road Bridge

The Chenggu Railway is an important part of the "Eight Vertical and Eight Horizontal" high-speed railway main channels in the national "Medium and Long-Term Railway Network Plan", connecting Lanzhou and Guangzhou. The Yibin Jinsha River Dual-Use Railway Bridge, located in the lower reaches of the Jinsha River, is a key project of the Chenggu Railway. It is 1,875 meters long, with a main span of 336 meters. The upper layer is a 4-line high-speed railway, and the lower layer is a 6-lane urban expressway main artery. The height difference between the road bridge deck and the railway bridge deck is 32 meters, making it the world's largest-span dual-use steel box arch bridge.

On June 28, 2017, this special bridge was successfully completed. A total of 4 sets of viscous dampers were used, with the following models and parameters: