G8513 Pingliang–Mianyang Expressway

The G85 13 Pingliang–Mianyang Expressway, commonly referred to as the Pingmian Expressway , is an expressway in China that connects the cities of Pingliang, Gansu and Mianyang, Sichuan.

The Pingliang–Tianshui section includes the 9650 m Guangshan tunnel through the Liupan Mountains.