Lanzhou Xigu Tunnel Liu Quan Tunnel Start Time

April 2022 1. According to relevant public information, the commencement date of Lanzhou Xigu Tunnel Liu Quan Tunnel is April 2022 1, and the planned completion date is February 2027 15. Xigu tunnel is the longest tunnel in the whole line, and it is also a controlled project in the whole line. Located in Xigu-Liujiaxia section of Lanzhou City, Gansu Province, with a total length of 13.4 km, it is a double-hole single-track tunnel.