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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.
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It is the newest trunk route to be numbered under the Strategic Route Number System. The section between Tseung Kwan O and Lam Tin consisting of the new Cross Bay Link and Tseung Kwan O–Lam Tin Tunnel opened to traffic on the 11th of December, 2022. This is the first and so far the only portion of Route 6 which is open.
China National Highway 318 between Yajiang and Kangding, Sichuan. The building of highways is seen as key to accelerating infrastructure construction. In 2003, completed investment in highway construction was 350 billion yuan and 219 key highway projects progressed, focusing mainly on the five north–south and seven east–west national arterial highways as well as highways in western China ...
The tunnel, concealed with wooden panels and hidden access through a sewer, measured approximately 300 meters on the Mexican side, with dimensions of 1.80 meters in height and 1.20 meters in width.
Circle route 23.1 (14.35) 1984–1987 M3: Istanbul Metro Turkey: Bakırköy Sahil – Şehir Hastanesi Viaduct 22.6 (16.6) 2013–2024 Line 9: Chengdu Metro China: Phase 1 of the second loop line in Chengdu, all underground 22.18 km (13.78 mi) 2020 Line 19: Beijing Subway: Mudanyuan – Xingong: 22.4 (13.9) 2021 Songshan-Xindian Line (Taipei ...
Lei Yue Mun Interchange, northern entrance to the Eastern Harbour Crossing. Route 2 (Chinese: 二號幹綫) of Hong Kong is a series of expressways that runs from Quarry Bay of Hong Kong Island to Ma Liu Shui of the New Territories East, formerly known as route 6, and renamed as route 2 in 2004 under the route numbering scheme proposed in the same year.