Yanmenguan Tunnel of Datong-Yuncheng Expressway in Shanxi Province


The construction commencement of this expressway tunnel is the earliest in China. This tunnel is provided with maximum burial depth of around 600m, with of 10.5m and height of 5m. The cumulative length of the left and right holes is 10395m. This tunnel was started in October 2001, completed and put into use in 2004.