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Longest conventional railway tunnel. It is also the world's longest transit tunnel by geodetic distance; 55.782 km (34.661 mi) between the two portals. Total 151.84 km (94.35 mi) of broken out tunnels through solid rocks. [6] [7] Part of the NRLA. Metro Beijing Subway Line 10: Beijing, China
An immersed tunnel is planned for the Fehmarn Belt. At 17.6 km (10.9 mi), it will be the longest ever constructed, surpassing the current largest immersed tube tunnel, which spans 6.75 km (4.19 mi) across the Pearl River Estuary in China as part of the Hong Kong–Zhuhai–Macau Bridge.
[3]: 268 The oldest immersed tube in Europe is the Maastunnel in Rotterdam, which opened in 1942. [4] The Marmaray Tunnel, connecting the European and Asian sides of Istanbul, Turkey, is the world's deepest immersed tunnel at 55 metres (180 ft) below sea level; [5] it is the first rail link crossing the straits. Construction began in 2004 and ...
The tunnel, which will be 18 kilometers (11.1 miles) long, is one of Europe’s largest infrastructure projects, with a construction budget of over 7 billion euros ($7.1 billion).
KPE & MCE Expressway Tunnel [f] Singapore 12.46 km (7.7 mi) 2013 1 [g] KPE and MCE: Maijishan Tunnel China 12.29 km (7.6 mi) [h] 2009 2 G30 Lianyungang–Khorgas Expressway: Daxiagu Tunnel China 12.146 km (7.5 mi) 2023 2 S66 Longchang-Hanyuan Expressway East Tianshan Tunnel China 11.775 km (7.3 mi) [i] 2021 2
The longest underwater road tunnel in the world Arlberg: Austria (Vorarlberg - Tyrol) 13.972 km (8.7 mi) 1978 1 S16/E60 "World's longest tunnel" 1979 - 1980: Xishan Tunnel: China 13.654 km (8.5 mi) 2012 [25] 2 S56 Shanxi Taiyuan-Gujiao Expressway Left tube：13.654 m, right tube：13.570 m New Erlangshan Tunnel [26] China
Not only is it one of Europe’s largest infrastructure projects but the underwater road and rail tunnel will be the longest in the world once it opens in 2029.
Chinese workers building what would be the world's longest tunnel have come up against an unexpected problem in one of the driest areas on Earth - gushing streams of water. That is according to ...