Guankouya Tunnel on Changde-Zhangjiajie Expressway

Released at: 12 March,2019

  The Guankouya Tunnel in the Changde-Zhangjiajie section of G5531 Changsha-Zhangjiajie Expressway is an ultra-wide ultra-high tunnel finally completed in December 2005, with the left tube of 880 m, the right tube of 700 m, the clear width of 12.1 m and the clear height of 7.1 m.