| Country: | CHN |
| Province: | Xinjiang |
| Type: | S |
| Route: | 13 |
| Sanchakou–Yarkant Expressway 三岔口–莎车高速公路 | |
| Alternate Name: | S13 Expressway Sansha Expressway 三莎高速公路 |
| Length Km: | 233.6 |
| Length Ref: | [1] |
| Established: | November 17, 2014 |
| Direction A: | North |
| Terminus A: | in Sanchakou, Maralbexi County, Kashgar Prefecture, Xinjiang |
| Junction: | Makit–Kashgar Expressway in Makit County, Kashgar Prefecture |
| Direction B: | South |
| Terminus B: | in Yarkant County, Kashgar Prefecture |
The Sanchakou–Yarkant Expressway, commonly referred to as the S13 Sansha Expressway, is an expressway that connects the town of 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. In some sources, the expressway is referred to as the Maralbexi–Yarkant Expressway, or Basha Expressway for short.[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.