China National Highway 317

National Highway 317
National Highway 317
317国道
	G317 by the Zipingpu Reservoir, Dujiangyan, Sichuan
Route information
Length	2,028 km (1,260 mi)
Major junctions
From	Chengdu, Sichuan
To	Naqu, Tibet
Location
Country	China
Highway system
	National Trunk Highway System; Primary; Auxiliary;

China National Highway 317 (G317) runs broadly west to east from Chengdu, Sichuan to Gar County, Ngari Prefecture, Tibet. It is 2,028 kilometres in length and forms an important transportation route in Tibet. As of 2017, Highway 317 passes through the highest vehicular tunnel in the world in the Chola Mountains of Dêgê County. Part of the route is concurrent with the Sichuan-Tibet Highway.

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