北盘江
The line traverses rugged terrain in the Wumeng Mountains of western Guizhou and has 50 tunnels and 102 bridges, which collectively account for 64% of the track length. The arch bridge across the deep canyon of the Beipan River and is the highest railway bridge in the world with its road bed 275 m above the Beipan River below. The remote location of Shuibai line required the building of 220.3 km of access roads to support the railway's construction.