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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.
Descending up to 40 meters beneath the Baltic Sea, the world’s longest immersed tunnel will link Denmark and Germany, slashing journey times between the two countries when it opens in 2029.
[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 ...
Mawan Tunnel China 6.280 km (3.902 mi) 2024 2 Mawan Cross-sea Corridor Jiuling Tunnel China 6.264 km (3.892 mi) 2026 2 G59 12 Fangxian-Wufeng Expressway: Helinyakou Tunnel China 6.260 km (3.9 mi) 2024 2 China National Highway G341: Ma'anshan Tunnel China 6.252 km (3.885 mi) 2025 2
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. ... the 18-kilometre immersed ...
At long last, the world?s longest?and deepest?tunnel lives in Switzerland.
The Seikan Tunnel is the world's longest tunnel with an undersea segment: 53.8 km: 240 m: 1971–1988 Flekkerøy Tunnel: Flekkerøy, Norway: Connecting the island community of Flekkerøy in southern Norway to the mainland: 2.3 km: 101 m: 1986–1989 Sydney Harbour Tunnel: Sydney, Australia: 2.8 km: 1988–1992 Channel Tunnel: England – France