Zhongnanshan Tunnel, or Qinling Zhongnanshan Tunnel () in

Shaanxi Shaanxi (alternatively Shensi, see § Name) is a landlocked province of China. Officially part of Northwest China, it borders the province-level divisions of Shanxi (NE, E), Henan (E), Hubei (SE), Chongqing (S), Sichuan (SW), Gansu (W), N ...

province, China, is the longest two-tube road

tunnel A tunnel is an underground passageway, dug through surrounding soil, earth or rock, and enclosed except for the entrance and exit, commonly at each end. A pipeline is not a tunnel, though some recent tunnels have used immersed tube cons ...

in China.World's Second Longest Road Tunnel Opens in China
last accessed April 2013 It is also the third longest road tunnel overall in the world, after the

Lærdal Tunnel The Lærdal Tunnel ( no, Lærdalstunnelen) is a road tunnel connecting the municipalities of Lærdal and Aurland in Vestland county, Norway, and located approximately northeast of Bergen. The tunnel carries two lanes of European Route E16 and r ...

Norway Norway, officially the Kingdom of Norway, is a Nordic country in Northern Europe, the mainland territory of which comprises the western and northernmost portion of the Scandinavian Peninsula. The remote Arctic island of Jan Mayen and the ...

and the

Yamate Tunnel The carries the Central Circular Route (C2) of the Shuto Expressway in Tokyo, Japan, from the Takamatsu on-ramp in Toshima to near the Ōi Junction in Shinagawa. It has a length of . Lying below the surface, about 70 percent of the tunnel was ...

in Japan The long tunnel, crosses under the Zhongnan Mountain ('). It opened on 20 January 2007, becoming part of the

Xi'an Xi'an ( , ; ; Chinese: ), frequently spelled as Xian and also known by other names, is the capital of Shaanxi Province. A sub-provincial city on the Guanzhong Plain, the city is the third most populous city in Western China, after Chongqi ...

Ankang Ankang () is a prefecture-level city in the south of Shaanxi Province in the People's Republic of China, bordering Hubei province to the east, Chongqing municipality to the south, and Sichuan province to the southwest. History The sett ...

Highway between the

Changan Chang'an (; ) is the traditional name of Xi'an. The site had been settled since Neolithic times, during which the Yangshao culture was established in Banpo, in the city's suburbs. Furthermore, in the northern vicinity of modern Xi'an, Qin Shi ...

and Zhashui counties. The cost to build the tunnel was 3.2 billion yuan (US$410 million). The maximum embedded depth of the tunnel is 1640 metres below surface level.

References

Transport in Shaanxi Buildings and structures in Shaanxi Road tunnels in China Tunnels completed in 2007 2007 establishments in China {{Shaanxi-geo-stub