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Longest tunnel of the Central Yunnan Water Diversion Project [93] Railway Twin Tube Mont d'Ambin Base Tunnel: Cottian Alps, France/Italy 57,500 m (35.729 mi) 2032 [94] Part of the Lyon–Turin high-speed railway. Reconnaissance tunnels under construction since 2002; construction of main tunnel started in 2016. [95] Railway Twin Tube Brenner ...
The system of Odessa Catacombs consists of a network of basements, bunkers, drainage tunnels and storm drains as well as natural caves. [1] The catacombs are on three levels and reach a depth of 60 metres (200 ft) below sea level. It is one of the world's largest urban labyrinths, running up to 2,500 kilometres (1,600 mi). [1]
Baiyunshan Tunnel China 6.458 km (4.013 mi) 2026 2 Yuxiang 2nd Expressway Wufu Tunnel China 6.454 km (4.010 mi) 2026 2 G50 12 Enshi-Guangyuan Expressway Baolongping Tunnel China (Chongqing, Sichuan) 6.450 km (4.008 mi) 2025 2 Chongqing-Chishui-Xuyong Expressway Jiangyin-Jingjiang Yangtse River Tunnel
New York City water supply system tunnels 1 and 2; New York City Water Tunnel No. 3; Otisville Tunnel on Erie Railroad, Otisville, Orange County [35] Shandaken Tunnel, New York City water supply system, between Schoharie Reservoir and Esopus Creek; State Line Tunnel, Canaan, on the Boston and Albany main rail line.
The project could take travelers from the British capital to the Big Apple in just about 54 minutes via a 3,400-mile tunnel. Discussions about an underground tunnel linking London to New York have ...
That was the high-speed 35.3-mile twin tunnel system that Boring wanted to dig at least 30 feet underground to connect Baltimore to Washington, D.C., with stops along the way.
Poola Subbaiah Veligonda Project Tunnel - II [70] [65] Andhra Pradesh, India: 18.83 km (11.7 mi) 2021 [needs update] Irrigation Poola Subbaiah Veligonda Project Tunnel - I [70] [65] Andhra Pradesh, India: 18.82 km (11.7 mi) 2020 [needs update] [71] Irrigation Many more tunnels that are shorter than 15 kilometres (9 mi) are under construction
The tunnel system is a far cry from the ... Musk had envisioned sci-fi systems for cities worldwide that would shoot pods carrying passengers through underground tubes at hundreds of miles per ...