The Sanchakou–Yarkant Expressway (Chinese: 三岔口–莎车高速公路), commonly referred to as the S13 Sansha Expressway (Chinese: 三莎高速公路), is an expressway that connects the town of Sanchakou [zh] in Maralbexi County with Yarkant County.

The route is entirely in the Kashgar Prefecture in the Chinese autonomous region of Xinjiang.

It opened on November 17, 2014,[2] and parallels much of Xinjiang Provincial Highway 215.

[3] The expressway connects with the G3012 Turpan–Hotan Expressway at both ends, serving as a bypass of the city centre of Kashgar.

It was built with the help of resources from the municipality of Shanghai.