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Jinjiazhuang Tunnel (Chinese: 金家庄隧道) or Jinjiazhuang Spiral Tunnel (Chinese: 金家庄螺旋隧道), is the world's longest highway spiral tunnel. [ 1 ] [ 2 ] The spiral has a curve radius of 860 metres (2,820 ft) and the elevation difference between the tunnel entrance and exit is 112 metres (367 ft).
There are four classes of road tunnels in China by length. [1]Super-long tunnel (>3,000m) Long tunnel (1,000m-3,000m) Middle-tunnel (250m-1,000m) Short tunnel (<250m) By 2012, there are 10,022 road tunnels and 8,052.7 km in total length in mainland China, including 441 super-long tunnels with 1,984.8 km in total length and 1,944 long tunnels with 3,304.4 km in total length.
This page was last edited on 27 January 2017, at 05:51 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
The following 4 pages are in this category, out of 4 total. This list may not reflect recent changes. C. ... Jinjiazhuang Tunnel; K. Kjernfjelltunnelen; M. Mælefjell ...
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The 18,040-metre (11.21 mi) long tunnel, crosses under the Zhongnan Mountain (Zhongnanshan). It opened on 20 January 2007, becoming part of the Xi'an-Ankang Highway between the Changan and Zhashui counties. [1] The cost to build the tunnel was 3.2 billion yuan (US$410 million). [1] The maximum embedded depth of the tunnel is 1640 metres below ...
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