When was the highway from Sangzhi to Yongshun built?

202111October 9. The highway project from Sangzhi to Yongshun County, namely Taozixi to Yongshun County in S306, was completed on 202 1 654381October 9. Sangzhi County, belonging to Zhangjiajie City, Hunan Province, is located in the northwest border of Hunan Province, with Cili County, Shimen County and Wulingyuan District in the east, Yongding County and Yongshun County in the south, Longshan County in the west and Xuanen County and Hefeng County in Hubei Province in the north.