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This page presents a list of the longest continuous underground rapid transit tunnel sections of the world, excluding branches from the longest tunnel (branch lines that used to transport passengers should be included). Note: This article only lists tunnels that are 15 km (6.2 miles) or longer.
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 ...
A tunnel is an underground passageway with no defined minimum length, though it may be considered to be at least twice as long as wide. Some government bodies define a tunnel as 150 metres (0.093 mi) in length or longer. [1] A tunnel may be for pedestrians or cyclists, for general road traffic, for motor vehicles only, for rail traffic, or for ...
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).
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
Hamas in 2021 claimed to have built 500 kilometers (311 miles) worth of tunnels under Gaza, though it is unclear if that figure was accurate or posturing. If true, Hamas’ underground tunnels ...
The tunneling firm wants to expand its Vegas network by building a 68-mile Vegas Loop under the city that would connect the existing tunnels to downtown Las Vegas and the city's international airport.
Artemisio Tunnel (road), double tunnel, under Mount Artemision, 1.40 km 76 tunnels of the A2 motorway (Egnatia Odos), most notably in parts of Epirus and Western Macedonia , combined length of 99 km, the longest of which are Driskos Tunnel 4.6 km, Metsovo Tunnel 3.5 km, Dodoni Tunnel 3.6 km, Kastania Tunnel 2.2 km, Anilio Tunnel 2.1 km