Sanglong Expressway

Sanglong Expressway belongs to the national expressway planning network G5515 Zhangjiajie-Nanchong Expressway, which is an important part of the "seven vertical, nine horizontal and three ring" expressway network planned by Hunan Province and an important high speed corridor in northwest Hunan. The starting point of the route is in Sangzhi County and the Zhang-Sang high-speed Sangzhi West interchange, the end of the Long-Shan County Maoping Township and Long-Yong high-speed connection set Maoping hub interchange. The main line of the project is 61.5 kilometers long, with a design speed of 100 kilometers per hour and a planned construction period of 48 months. Among them, the length of the main line of the project is about 32.9 kilometers, and the connection is about 10 kilometers; the estimated total investment is 5.1 billion yuan.