List of longest tunnels in the world

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This list of longest tunnels in the world ranks tunnels that are at least 13 km (43,000 ft) long. Only continuous tunnels are included, pipelines (also buried) are excluded. The longest have been constructed for water distribution, followed by tunnels for railways. Both uses are highly sensitive to gradients.

World's longest tunnels (in use)[edit]

Name Location Length Type Year Comment
Delaware Aqueduct United States New York state, United States 137,000 m (85.1 mi) Water supply 1945 New York City's main water supply tunnel, drilled through solid rock.
Päijänne Water Tunnel Finland Southern Finland, Finland 120,000 m (74.6 mi) Water supply 1982 16 m2 cross section
Dahuofang Water Tunnel China Liaoning Province, China 85,320 m (53.0 mi) Water supply 2009 8 m in diameter[1] (50m2 cross section)
Orange–Fish River Tunnel South Africa South Africa 82,800 m (51.4 mi) Water supply 1972 Longest continuous enclosed aqueduct in the southern hemisphere (22.5 m2 cross section)
Bolmen Water Tunnel Sweden Kronoberg/Scania, Sweden 82,000 m (51.0 mi) Water supply 1987 8 m2
Guangzhou Metro: Line 3 China Guangzhou, China 60,400 m (37.5 mi)Excl. branch Metro 2005-2010 Longest metro/rapid transit tunnel
longest railway tunnel
Tunel Emisor Oriente: Water management in Greater Mexico City Mexico Mexico City, Mexico 62,500 m (38.8 mi) Waterwaste 2006-2012 Longest waterwaste tunnel
Beijing Subway: Line 10 China Beijing, China 57,100 m (35.5 mi) Metro 2008-2012
Seikan Tunnel Japan Tsugaru Strait, Japan 53,850 m (33.5 mi) Railway Single Tube 1988 Longest railway tunnel excluding urban metro lines with intermediate stations, 74 m2
Želivka Water Tunnel[2] Czech Republic Central Bohemian Region, Czech Republic 51,075 m (31.7 mi) Water supply 1972 5 m2
Channel Tunnel United Kingdom France English Channel, United Kingdom/France 50,450 m (31.3 mi) Railway Twin Tube 1994 Longest underwater section, longest international tunnel, second-longest railway tunnel (2×45 m2 + 1×18 m2)
Arpa-Sevan Tunnel[3] Armenia Armenia
(at the time of construction Soviet Union Soviet Union)
48,314 m (30.0 mi) Water supply 1981
Seoul Subway: Line 5 South Korea Seoul, South Korea 47,600 m (29.6 mi) Metro 1995
Seoul Subway: Line 3 (Apgujeong-Ogeum) South Korea Seoul, South Korea 47,600 m (29.6 mi) Metro 1985-2010
#1 Tunnel, Yellow River Diversion to Shanxi North Line China Shanxi, China 43,670 m (27.1 mi) Water supply 2011
#7 Tunnel, Yellow River Diversion to Shanxi South Line China Shanxi, China 43,500 m (27.0 mi) Water supply 2002
Altufyevo - Bulvar Dmitriya Donskogo (line 9) Russia Moscow Metro, Russia 41,500 m (25.8 mi) Metro 1983–2002
Metro Madrid: L-12 (Metro Sur) Spain Madrid, Spain 40,900 m (25.4 mi) Metro 1999–2003
Tocho-mae - Shiodome - Hikarigaoka (Toei Oedo Line)[4] Japan Tokyo, Japan 40,700 m (25.3 mi) Metro 1991–2000 Tokyo Metropolitan Bureau of Transportation
Shanghai Subway: Line 7 China Shanghai, China 40,200 m (25.0 mi) Metro 2009-2011
Kárahnjúkar Hydropower Plant Iceland Fljótsdalshreppur, Iceland 39,700 m (24.7 mi) Hydroelectric 2003–2007 7.2-7.6 meters in diameter (45m2 cross section). Part of a wider complex of tunnels that are 72 kilometers in length combined
Quabbin Aqueduct United States Massachusetts, United States 39,600 m (24.6 mi) Water supply 1897–1905
Medvedkovo - Novoyasenevskaya (line 6) Russia Moscow Metro, Russia 37,600 m (23.4 mi) Metro 1958–1990 Longest railway tunnel 1978–1984 and from November 1987 till March 1988; longest metro/rapid transit tunnel 1990-1995
Shenzhen Subway: Luobao Line China Shenzhen, China 37,497 m (23.3 mi) Metro 2009-2011
Shenzhen Subway: Shekou Line China Shenzhen, China 36,146 m (22.5 mi) Metro 2010-2011
Dawushan Tunnel, Niulan River Diversion to Dianchi China Yunnan, China 36,137 m (22.5 mi) Water supply 2013
Shanghai Subway: Line 10 China Shanghai, China 36,000 m (22.4 mi) Metro 2010
Singapore: Circle Line Singapore Singapore, Singapore 35,700 m (22.2 mi) Metro 2012
Busan Metro: Line 2 (Dongwon-Jangsan) South Korea Busan, South Korea 35,500 m (22.1 mi) Metro 1999-2002
Seoul Subway: Line 6 South Korea Seoul, South Korea 35,100 m (21.8 mi) Metro 2001
Seoul Subway: Line 7 (Cheongdam-Bupyeong-gu Office) South Korea Seoul, Incheon, Bucheon and Gwangmyeong in South Korea 35,100 m (21.8 mi) Metro 2000-2012
Lötschberg Base Tunnel Switzerland Bernese Alps, Switzerland 34,577 m (21.5 mi) Railway Single Track 2007 Longest land tunnel, single track along 22 km
Tyne-Tees Tunnel United Kingdom England, United Kingdom 34,000 m (21.1 mi) Water supply Northumbrian water supply tunnel.
Metro Madrid: L-7 Spain Madrid, Spain 32,919 m (20.5 mi) Metro 1974–2007
New Guanjiao Tunnel China Qinghai, China 32,645 m (20.3 mi) Railway Twin Tube 2014[5] Longest tunnel on the upgraded dual-track Xining–Golmud section of Qinghai–Tibet Railway, longest railway tunnel in China, 3323.58–3380.97 meters above sea level
Meijo Line - Meikō Line[6][7] Japan Nagoya Municipal Subway, Japan 32,400 m (20.1 mi) Metro 1965–2004
Guangzhou Subway: Line 2 China Guangzhou, China 32,000 m (19.9 mi) Metro 2010
Rathaus Spandau-Rudow (U7) Germany Berlin U-Bahn, Germany 31,800 m (19.8 mi) Metro 1924–1984
Seoul Metropolitan Subway: Bundang Line (Seoul Forest-Jukjeon) South Korea Seoul, Seongnam and Yongin in South Korea 31,400 m (19.5 mi) Metro 1994-2012
Daegu Metro: Line 2 South Korea Daegu and Gyeongsan in South Korea 31,400 m (19.5 mi) Metro 2005-2012
Beijing Subway: Line 1 China Beijing, China 31,040 m (19.3 mi) Metro 1971-1987
Beijing Subway: Line 4 China Beijing, China 30,950 m (19.2 mi) Metro 2009-2010
Côte-Vertu - Montmorency (Line 2 Orange) Canada Montreal Metro, Canada 30,798 m (19.1 mi) Metro 1966–2007
Shanghai Subway: Line 2 China Shanghai, China 30,187 m (18.8 mi) Metro 2000
Parnas - Kupchino (line 2) Russia Saint Petersburg Metro, Russia 30,100 m (18.7 mi) Metro 1961–2006
Guangzhou Subway: Line 5 China Guangzhou, China 29,900 m (18.6 mi) Metro 2009
Shanghai Subway: Line 8 China Shanghai, China 29,650 m (18.4 mi) Metro 2007-2009
Prospekt Veteranov - Devyatkino (line 1) Russia Saint Petersburg Metro, Russia 29,600 m (18.4 mi) Metro 1955–1978
Evinos - Mornos Tunnel[8][9] Greece Aetolia-Acarnania, Greece 29,400 m (18.3 mi) Water Supply 1992-1995
Hultman Aqueduct[10] United States Eastern Massachusetts, United States 28,640 m (17.8 mi) Water Supply 1939 11.5 ft (3.5 m) to 14 ft (4.3 m) diameter (15m2 cross section); offline for rehabilitation
Guadarrama Tunnel[11] Spain Sierra de Guadarrama, Spain 28,377 m (17.6 mi) Railway Twin Tube 2007
MetroWest Water Supply Tunnel[12] United States Eastern Massachusetts, United States 28,300 m (17.6 mi) Water Supply 1996–2003 14 ft (4.3 m) diameter (15m2 cross section)
Zyablikovo - Maryina Roshcha (line 10) Russia Moscow Metro, Russia 28,200 m (17.5 mi) Metro 1995–2011
Taihang Tunnel[13] China Taihang Mountains, China 27,848 m (17.3 mi) Railway Single Tube 2007 On Shijiazhuang-Taiyuan high-speed railway
Morden - East Finchley (Northern line) United Kingdom London Underground, England, United Kingdom 27,800 m (17.3 mi) Metro 1890–1940 Longest railway tunnel in UK
Shenyang Subway: Line 1 China Shenyang, China 27,800 m (17.3 mi) Metro 2010
Seoul Metropolitan Subway: Incheon Line 1 (Bakchon-International Business District) South Korea Incheon, South Korea 27,000 m (16.8 mi) Metro 1999-2009
MRT Blue Line Thailand Bangkok, Thailand 27,000 m (16.8 mi) Metro 2004 Second phase will be open in 2017
Dainichi-Nagahara (Tanimachi Line)[14] Japan Osaka Municipal Subway, Japan 26,900 m (16.7 mi) Metro 1967–1983
LEP Tunnel[15] Switzerland France CERN, Switzerland/France 26,659 m (16.6 mi) Particle accelerator 1989 11.3–15.9 m2 circular ring, now used by Large Hadron Collider
İstanbul Metro (Line M4) Turkey İstanbul, Turkey 26,500 m (16.5 mi) Metro 2012
Hakkōda Tunnel(Tōhoku Shinkansen) Japan Hakkōda Mountains, Japan 26,455 m (16.4 mi) Railway Single Tube 2010 64–74 m2
Şanlıurfa Irrigation Tunnels Turkey Turkey 26,400 m (16.4 mi) Irrigation 2005 [16]
Shanghai Subway: Line 9 China Shanghai, China 26,263 m (16.3 mi) Metro 2007-2010
Gilgel Gibe II Power Station headrace tunnel Ethiopia Ethiopia 26,000 m (16.2 mi) Hydroelectric 2005–2009 Tunnel partially collapsed, under repair until November 2010.[17]
#5 Tunnel, Yellow River Diversion to Shanxi South Line China Shanxi, China 26,000 m (16.2 mi) Water 2002
Daegu Metro: Line 1 South Korea Daegu, South Korea 25,900 m (16.1 mi) Metro 1997-2002
Iwate-Ichinohe Tunnel Japan Ōu Mountains, Japan 25,810 m (16.0 mi) Railway Single Tube 2002
Sudbury Aqueduct United States Eastern Massachusetts, United States 25,750 m (16.0 mi) Water Supply 1878 Emergency backup use
Suzhou Subway: Line 1 China Shanghai, China 25,739 m (16.0 mi) Metro 2007-2011
Lærdal Tunnel Norway Lærdal - Aurland, Norway 24,510 m (15.2 mi) Road 2000 The longest road tunnel in the world
Yellow Line (Delhi Metro): GTB Nagar - Qutub Minar[18] India Delhi, India 24,000 m (14.9 mi) Metro 2004–2010 Longest tunnel in India
Metro Madrid: L-1 Spain Madrid, Spain 23,876 m (14.8 mi) Metro
Lainzer/Wienerwaldtunnel Austria west of Vienna, Austria 23,844 m (14.8 mi) Railway 2012 Breakthrough 2007-09-03
Eucumbene-Snowy Tunnel[19] Australia NSW, Australia 23,500 m (14.6 mi) Water supply 1965 Part of the 145 km tunnel network of the Snowy Mountains Scheme
Metro Madrid: L-6 Spain Madrid, Spain 23,472 m (14.6 mi) Metro 1979–2007
Seoul Subway: Line 9 (Gimpo Airport-Sinnonhyeon) South Korea Seoul, South Korea 23,400 m (14.5 mi) Metro 2009
Angrignon - Honoré-Beaugrand (Line 1 Green) Canada Montreal Metro, Canada 23,262 m (14.5 mi) Metro 1966–2007
Warsaw Metro L-1: Kabaty - Młociny Poland Warsaw, Poland 23,100 m (14.4 mi) Metro 1983–2008
Beijing Subway: Line 2 China Beijing, China 23,100 m (14.4 mi) Metro 1969-1987
Xinma Hydroelectric Power Station Water Tunnel China Sichuan, China 22,975 m (14.3 mi) Hydroelectric 2009
Eucumbene-Tumut Tunnel[19] Australia NSW, Australia 22,200 m (13.8 mi) Water supply 1959 Part of the 145 km tunnel network of the Snowy Mountains Scheme
Daishimizu Tunnel Japan Mount Tanigawa, Japan 22,221 m (13.8 mi) Railway 1982
Taipei Metro: Blue Line Taiwan Taipei, Taiwan 21,900 m (13.6 mi) Metro 1999-2011
Vorotan-Arpa Tunnel[20] Armenia Armenia 21,652 m (13.5 mi) Water supply 2004
Taipei Metro: Orange Line (Fu Jen University - Nanshijiao) Taiwan Taipei, Taiwan 21,400 m (13.3 mi) Metro 1998-2010
UNK proton accelerator Russia Protvino (near Moscow), Russia 21,000 m (13.0 mi) Particle accelerator (incomplete) 1994 (breakthrough) Construction stopped after finishing of main circle tunnel, future is unclear
Guangfo Metro China Foshan, China 20,900 m (13.0 mi) Metro 2010
Luliangshan Tunnel China Shanxi, China 20,785 m (12.9 mi) Railway Twin Tube 2011 2 tubes, left tube is 20785 meters, right tube is 20738 meters
Shanghai Subway: Line 4 China Shanghai, China 20,740 m (12.9 mi) Metro 2005-2007
Barcelona Metro: Line 1 Spain Barcelona, Spain 20,700 m (12.9 mi) Metro 1926–1992
Busan Metro: Line 1 (Hadan-Busan Nat'l Univ. of Education) South Korea Busan, South Korea 20,600 m (12.8 mi) Metro 1985-1994
Xian Subway: Line 2 China Xian, China 20,500 m (12.7 mi) Metro 2011
Daejeon Metro: Line 1 South Korea Daejeon, South Korea 20,470 m (12.7 mi) Metro 2006-2007
Nanjing Subway: Line 2 China Nanjing, China 20,380 m (12.7 mi) Metro 2010
Shanghai Subway: Line 6 China Shanghai, China 20,336 m (12.6 mi) Metro 2007
Ward Tunnel[citation needed] United States California, United States 20,610 m (12.8 mi) Hydroelectric 1920-1925 Part of the Big Creek Hydroelectric Project of the Southern California Edison Company. Excavated through solid granite.
Geumjeong Tunnel[21] South Korea Busan, South Korea 20,323 m (12.6 mi) Railway 2010 Gyeongbu High Speed Railway
Wushaoling Tunnel China Wuwei, China 20,060 m (12.5 mi) Railway Twin Tube 2006-2007 Twin Tube, left tube is 20060 meters, right tube is 20050 meters
The London Connection[22] United Kingdom London, England, United Kingdom 20,000 m (12.4 mi) Electric power transmission tunnel 2005[23] National Grid plc, 3-metre diameter, 400 kilovolt circuit
Taipei Metro: Orange Line (Luzhou - Nanshijiao) Taiwan Taipei, Taiwan 19,600 m (12.2 mi) Metro 1998-2010
Simplon Tunnel Switzerland Italy Lepontine Alps, Switzerland/Italy 19,803 m (12.3 mi) Railway Twin Tube 1906 A parallel tunnel was opened in 1922 (19,824 m long)
Koltsevaya Line (Circle Line) Russia Moscow Metro, Russia 19,400 m (12.1 mi) Metro 1950-1954
Futang Hydroelectric Power Station Water Tunnel China Wenchuan, Sichuan, China 19,319 m (12.0 mi) Hydroelectric 2009
Seoul Metropolitan Subway: Bundang Line (Suwon Station-Jukjeon Station) South Korea Yongin and Suwon in South Korea 19,300 m (12.0 mi) Metro 2007-2013
Vereina Switzerland Silvretta, Switzerland 19,058 m (11.8 mi) Railway Single Track 1999 Single track with passing loops, metre gauge
Seoul Subway: Line 4 (Ssangmun-Ichon) South Korea Seoul, South Korea 19,000 m (11.8 mi) Metro 1980
Shin Kanmon Tunnel Japan Kanmon Straits, Japan 18,713 m (11.6 mi) Railway 1975
Shiziping Hydroelectric Power Station Water Tunnel China Sichuan, China 18,712 m (11.6 mi) Hydroelectric 2009
Vaglia Italy Bologna - Firenze, Italy 18,711 m (11.6 mi) Railway Single Tube 2009 Bologna–Florence high-speed railway
Apennine Base Tunnel Italy Tuscan-Emilian Apennines, Italy 18,507 m (11.5 mi) Railway Single Tube 1934
Kurenivsko-Chervonoarmiyska Line Ukraine Kiev Metro, Ukraine 18,480 m (11.5 mi) Metro 1976
Qinling Tunnel I-II China Qin Mountains, China 18,460 m (11.5 mi) Railway Twin Tube 2000 Twin tubes, left tube is 18460 meters, right tube is 18456 meters[24]
Shanghai Subway: Line 17 China Shanghai, China 18,110 m (11.3 mi) Metro 1995
Avtozavodskaya Line Belarus Minsk Metro, Belarus 18,100 m (11.2 mi) Metro 1990
Baoxing Hydroelectric Power Station Water Tunnel China Sichuan, China 18,053 m (11.2 mi) Hydroelectric 2009
Zhongnanshan China China 18,040 m (11.2 mi) Road 2007 The longest road tunnel in China
Line 2 (Athens Metro)[25] Greece Athens, Greece 17,900 m (11.1 mi) Metro 1991–2013
Line 3 (Athens Metro)[25] Greece Athens, Greece 17,800 m (11.1 mi) Metro 1991–2013 Line 3 is actually 41 km long, but only 17.8 km of it are underground.
Beijing Subway: Line 5 China Beijing, China 17,825 m (11.1 mi) Metro 2007
Jingpingshan China Sichuan China 17,500 m (10.9 mi) Road 2008 The deepest transportation tunnel in China
Shenzhen Subway: Longgang Line China Shenzhen, China 17,333 m (10.8 mi) Metro 2010-2011
Kholodnohirsko–Zavodska Line Ukraine Kharkiv Metro, Ukraine 17,300 m (10.7 mi) Metro 1975
Seoul Metropolitan Subway: Shinbundang Line South Korea Seoul and Seongnam in South Korea 17,300 m (10.7 mi) Metro 2011
Mavi Tünel (Blue Tunnel)[26] Turkey Konya, Turkey 17,034 m (10.6 mi) Water / Irrigation 2012 Breakthrough 2007
Gotthard Road Tunnel Switzerland Lepontine Alps, Switzerland 16,918 m (10.5 mi) Road 1980
Guangzhou Metro: Line 43 China Guangzhou, China 16,790 m (10.4 mi) Metro 2005
Barcelona Metro: Line 4 Spain Barcelona, Spain 16,700 m (10.4 mi) Metro 1929–1999
Barcelona Metro: Line 3 Spain Barcelona, Spain 16,600 m (10.3 mi) Metro 1924–2001
Seoul Subway: Line 2 (Jamsil-Sillim) South Korea Seoul, South Korea 16,700 m (10.4 mi) Metro 1980-1984
Barcelona Metro: Line 5 Spain Barcelona, Spain 16,600 m (10.3 mi) Metro 1959–1983
Murrumbidgee-Eucumbene Tunnel[19] Australia NSW, Australia 16,600 m (10.3 mi) Water supply 1961 Part of the 145 km tunnel network of the Snowy Mountains Scheme
Ankara Metro (Kizilay-Çayyolu) Turkey Ankara, Turkey 16,590 m (10.3 mi) Metro 2002-2014 Tunnel construction complete, to be opened to public in 2014.
İstanbul Metro (Line M2) Turkey İstanbul, Turkey 16,500 m (10.3 mi) Metro 2000-2009
Beijing Subway: Line 9 China Beijing, China 16,500 m (10.3 mi) Metro 2011-2012
Jinkang Hydroelectric Power Station Water Tunnel China Sichuan, China 16,490 m (10.2 mi) Hydroelectric 2006
Metro Madrid: L-8 Spain Madrid, Spain 16,467 m (10.2 mi) Metro 1998–2007
Guangzhou Metro: Line 1 China Guangzhou, China 16,449 m (10.2 mi) Metro 1997
Metro Madrid: L-3 Spain Madrid, Spain 16,424 m (10.2 mi) Metro 1939–2007
Rokkō Tunnel[27] Japan Mount Rokkō, Japan 16,250 m (10.1 mi) Railway 1972
Soran Tunnel[28] South Korea Taebaek, Gangwon-do, South Korea 16,240 m (10.1 mi) Railway 2012 Taebaek Line, includes a spiral; breakthrough 2006-12-07
Seoul Subway: Line 7 (Suraksan-Konkuk University) South Korea Seoul, South Korea 16,000 m (9.9 mi) Metro 1996
İstanbul Metro (Line M3) Turkey İstanbul, Turkey 15,900 m (9.9 mi) Metro 2013
Henderson Tunnel[29][30] United States Front Range, United States 15,800 m (9.8 mi) Former railway 1976 Narrow gauge railway, replaced by a conveyor belt in 1999. Only one portal (served an underground mine)[31]
Pandaoling Tunnel, Datong River Diversion to Shaanxi Project China China 15,723 m (9.8 mi) Water supply 1994
Furka Base Switzerland Urner Alps, Switzerland 15,442 m (9.6 mi) Railway Single Track 1982 Single track with passing loops, metre gauge
Seoul Subway: Line 3 (Gupabal-Geumho) South Korea Seoul, South Korea 15,400 m (9.6 mi) Metro 1985
Tianjin Subway: Line 1 China Tianjin, China 15,378 m (9.6 mi) Metro 1976-2006
Dingshan Tunnel, Irtysh River Diversion to Ürümqi Project China Xinjiang, China 15,351 m (9.5 mi) Water supply 2006
Haruna Japan Gunma Prefecture, Japan 15,350 m (9.5 mi) Railway 1982
Severomuysky Tunnel Russia Severomuysky Range, Russia 15,343 m (9.5 mi) Railway Single Track 2003
Deer Island Outfall Tunnel[32] United States Deer Island, Boston, Massachusetts, United States 15,290 m (9.5 mi) Sewerage 2000 24 ft (7.3 m) diameter (42m2 cross section); discharges treated effluent into Atlantic Ocean
Firenzuola Italy Bologna - Firenze, Italy 15,285 m (9.5 mi) Railway Single Tube 2009 Bologna–Florence high-speed railway
Shanghai Subway: Line 2 China Shanghai, China 15,274 m (9.5 mi) Metro 2000 Between Zhanjianggaoke station and Lingkong Station
Jinquidi Tunnel, Niulan River Diversion to Dianchi China Yunnan, China 15,257 m (9.5 mi) Water supply 2013
Beijing Subway: Line 8 China Beijing, China 15,200 m (9.4 mi) Metro 2008-2011
Baotan Hydroelectric Power Station Water Tunnel China Guangxi, China 15,200 m (9.4 mi) Hydroelectric 2010
Gorigamine Tunnel[27] Japan Takasaki - Nagano, Japan 15,175 m (9.4 mi) Railway 1997
Xuecheng Hydroelectric Power Station Water Tunnel China Sichuan, China 15,174 m (9.4 mi) Hydroelectric 2007
Monte Santomarco Italy Paola - Cosenza, Italy 15,040 m (9.3 mi) Railway Single Track 1987
Gotthard Rail Tunnel Switzerland Lepontine Alps, Switzerland 15,003 m (9.3 mi) Railway Single Tube 1882
Gwangju Metro: Line 1 (Hakdong·Jeungsimsa-GwangjuSongjeong) South Korea Gwangju, South Korea 15,000 m (9.3 mi) Metro 2004
Nakayama Tunnel Japan Gunma Prefecture, Japan 14,857 m (9.2 mi) Railway 1982 Jōetsu Shinkansen
Cuajone-El Sargento Peru Ilo-Toquepala / Cuajone Industrial Railroad - Southern Peru Copper Corporation, Peru 14,724 m (9.1 mi)[33] Railway 1975
Mount Macdonald Tunnel Canada Rogers Pass, Glacier National Park, Canada 14,723 m (9.1 mi) Railway Single Track 1989
Lötschberg Tunnel Switzerland Alps, Switzerland 14,612 m (9.1 mi) Railway Single Tube 1913
Caoe River Diversion Project China Zhejiang, China 14,600 m (9.1 mi) Water supply 2011
Romerike Tunnel Norway Oslo - Lillestrøm, Norway 14,580 m (9.1 mi) Railway Single Tube 1999
Snowy-Geehi Tunnel[19] Australia NSW, Australia 14,500 m (9.0 mi) Water supply 1966 Part of the 145 km tunnel network of the Snowy Mountains Scheme
Seoul Metropolitan Subway: Line 4 (Isu-Beomgye) South Korea Seoul, Gwacheon and Anyang in South Korea 14,500 m (9.0 mi) Metro 1980-1994
Jisha Hydroelectric Power Station Water Tunnel China Yunnan, China 14,467 m (9.0 mi) Hydroelectric 2007
#6 Tunnel, Yellow River Diversion to Shanxi South Line China Shanxi, China 14,400 m (8.9 mi) Water supply 2002
Ala Mountain Pass Water Supply Project China Xinjiang, China 14,346 m (8.9 mi) Water Supply 2010
Tunnelbana 3 (Blue line), Kungsträdgården-Hjulsta Sweden Stockholm, Sweden 14,300 m (8.9 mi) Metro 1975–1977
Tooma-Tumut Tunnel[19] Australia NSW, Australia 14,200 m (8.8 mi) Water supply 1961 Part of the 145 km tunnel network of the Snowy Mountains Scheme
Dayaoshan Tunnel[34] China Nanling Mountains, China 14,294 m (8.9 mi) Railway Single Tube 1987
Guangzhou Subway: Line 8 China Guangzhou, China 14,200 m (8.8 mi) Metro 2003-2010
Metro Lisbon - Blue (Seagull) Line Portugal Lisbon, Portugal 14,000 m (8.7 mi) Metro 1959–2007
Arlberg Road Tunnel Austria Arlberg, Austria 13,972 m (8.7 mi) Road 1978
Shanggongshan Tunnel, Zhangjiuhe Water Supply Project China Yunnan, China 13,941 m (8.7 mi) Water Supply 2007
Dayingshan #4 Hydroelectric Power Station Water Tunnel China Yunnan, China 13,932 m (8.7 mi) Hydroelectric 2009 8.5 meters in diameter (57m2 cross section)
Hokuriku Tunnel Japan Fukui Prefecture, Japan 13,870 m (8.6 mi) Railway 1962 Hokuriku Main Line
Xiapu Tunnel China Fujian, China 13,838 m (8.6 mi) Railway Single Tube 2009
Yesanguan Tunnel China Hubei, China 13,838 m (8.6 mi) Railway Twin Tube 2010 Tube I: 13838 meters, tube II: 13796 meters
Xishan Tunnel China Shanxi, China 13,654 m (8.5 mi) Road Twin Tube 2012 Left tube: 13654 meters, right tube: 13570 meters
Fréjus (Mont Cenis) France Italy Alps, France/Italy 13,636 m (8.5 mi) Railway Single Tube 1871
North Tianshan Tunnel China Xinjiang, China 13,610 m (8.5 mi) Railway Single Tube 2009
Marmaray Turkey Istanbul, Turkey 13,600 m (8.5 mi) Metro 2013 Built next to a fault zone, between two continents
Busan Metro: Line 3 (Suyeong-Deokcheon) South Korea Busan, South Korea 13,500 m (8.4 mi) Metro 2005
Shin Shimizu Tunnel[27] Japan Mount Tanigawa, Japan 13,500 m (8.4 mi) Railway Twin Tube 1967
Savio Rail Tunnel Finland Helsinki - Kerava, Finland 13,500 m (8.4 mi) Railway Single Track 2008
Hex River Tunnel[35] South Africa Hex River Pass, South Africa 13,400 m (8.3 mi) Railway Single Track 1989
Wonhyo Tunnel[36][37] South Korea Ulsan, South Korea 13,270 m (8.2 mi) Railway 2010 Gyeongbu High Speed Railway
Dabieshan Tunnel China Hubei, China 13,256 m (8.2 mi) Railway Single Tube 2008
Schlern Tunnel[38] Italy South Tyrol, Italy 13,159 m (8.2 mi) Railway 1993
Caponero-Capoverde Italy Genova - Ventimiglia, Italy 13,135 m (8.2 mi) Railway Single Tube 2001 Includes an underground station ("San Remo")
Hongtiguan Tunnel China Shanxi, China 13,122 m (8.2 mi) Road Dual Tube 2013 Left tube: 13122 meters, right tube: 13098 meters
Barcelona Metro: Line 2 Spain Barcelona, Spain 13,100 m (8.1 mi) Metro 1985–1997
Aki Tunnel Japan Sanyo Shinkansen, Japan 13,030 m (8.1 mi) Railway 1975
Many more tunnels exist that are shorter than 13 kilometres (8 mi)

World's longest tunnels (under construction)[edit]

Name Location Length Type Year Comment
Qinling Tunnel, Han River Diversion to Wei River China Shaanxi, China 98,300 m (61.1 mi) Water Supply
New York City Water Tunnel No. 3 United States New York State, United States 96,560 m (60.0 mi) Water 2020 More water supply for New York City. Already in use; at completion it will be the world's third longest tunnel
Northern Cyprus Water Supply Project Turkey Northern Cyprus Mediterranean Sea, Turkey/Northern Cyprus 80,000 m (49.7 mi) Water Supply 2014 Construction of the world's first long undersea water supply pipeline, but is not a tunnel.
Gotthard Base Tunnel Switzerland Lepontine Alps, Switzerland 57,104 m (35.5 mi) or 57,017 m (35.4 mi) Railway Twin Tube 2016 new Gotthard Railway; at completion it will be the longest railway tunnel (breakthrough 2010-10-15)
Two tubes (East 57,104 m (35.5 mi), West 57,017 m (35.4 mi)), 8.8–9.5 m (29–31 ft) diameter, (71m2 cross section)
Brenner Base Tunnel Austria Italy Stubai Alps, AustriaItaly 55,000 m (34.2 mi) Railway Twin Tube 2025 Pilot tunnel under construction. Together with the already constructed Inntal Tunnel it will form the world's longest continuous railway tunnel with 64 km.[39]
L9 / L10 Spain Barcelona, Spain 43,710 m (27.2 mi) Metro 2016 partially The total system will have a length of 47.8 km, of which 43.71km is underground and 4.09km is on viaducts. North section of the line is in operation. In 2016 south section: airport El Prat / Collblanc will be in operation.
Gaoligongshan Tunnel China Yunnan, China 39,600 m (24.6 mi) Railway 2017 Railway between Dali and Ruili
Koralm Tunnel Austria Koralpe, Austria 32,900 m (20.4 mi) Railway Twin Tube 2022 Boring of main tunnel started at the west portal May 2010[40]
Neelum Jhelum HydroPower Tunnel Pakistan Muzaffarabad AJ&k, Pakistan 31,500 m (19.6 mi) Hydroelectric 2016
Semmering Base Tunnel Austria Lower Austria/Styria, Austria 27,300 m (17.0 mi) Railway Twin Tube 2024 Construction of the first contract section started January 2014.[41] Will cut travel time between Vienna and Graz by 30 minutes and is part of the Baltic-Adriatic Corridor
Melamchi Water supply Development Board Nepal Melamchi to Kathmandu, Nepal 26,000 m (16.2 mi) Water Tunnel 2014 Under construction, financed by Asian Development Bank
Musil Tunnel[42][43] South Korea Wonju-Jecheon (Jungang Line), South Korea 25,080 m (15.6 mi) Railway 2018 Work slated to start June 2011[needs update]
Pajares Base Tunnel Spain Principado de Asturias, Spain 24,667 m (15.3 mi) Railway Twin Tube 2016 Breakthrough 2008
Iiyama Tunnel[44] Japan Iiyama, Japan 22,225 m (13.8 mi) Railway 2015 Being built for the Hokuriku Shinkansen, breakthrough 2007
Ceneri Base Tunnel Switzerland Lepontine Alps, Switzerland 15,400 m (9.6 mi) Railway Twin Tube 2019 New Gotthard Railway
Mount Ovit Tunnel[45] Turkey Erzurum Province-Rize Province, Turkey 14,700 m (9.1 mi) Highway Twin tube 2015 Groundbreaking 2012
Ryfast Norway Stavanger-Strand, Norway 14,300 m (8.9 mi) Highway Twin tube 2018 Groundbreaking 2012
Possibly incomplete table. Many more tunnels are under construction that will be shorter than 13 kilometres (8 mi)

World's longest tunnels (advanced planning stage)[edit]

Name Location Length Type Year Comment
Bohai Strait tunnel China Bohai Strait, China 123,000 m (76.4 mi) Railway 2017–2023
Mont d'Ambin base tunnel France Italy Cottian Alps, FranceItaly 52,000 m (32.3 mi) Railway 2020–2023 Access shafts under construction
Line 4 (Athens Metro)[46] Greece Athens, Greece 33,000 m (20.5 mi) Metro 2015-2025
Rogfast Norway Stavanger, Norway 25,000 m (15.5 mi) Road 2015–2023 Two tunnels at 25 km each plus a 4 km detour tunnel
Barrandov tunnel Czech Republic PragueBeroun 24,700 m (15.3 mi)[47] Railway after 2018 Project is on hold
Follo Line Norway Oslo, Norway 19,000 m (11.8 mi) Railway 2020–2021
Fehmarn Belt Fixed Link GermanyDenmark Germany-Denmark 17,600 m (10.9 mi) Road & Railway 2020 Start of construction planned for 2014
Förbifart Stockholm[48] Sweden Stockholm, Sweden 16,000 m (9.9 mi) Road 2020 Construction not started yet
Kresna Gorge Tunnel[49] Bulgaria Kresna, Bulgaria 15,410 m (9.6 mi) Highway Twin tube 2020-23 Part of Struma motorway, connecting Sofia and Athens. Construction not started yet.

See also[edit]

References[edit]

  1. ^ "Dahuofang Water Tunnel". 
  2. ^ Mug, Vladislav; Konvicka, Vladislav (2009). "Underground World: Stola Water Delivery Conduit from the Water Tank Želivka to Prague" (in Czech: Štolový vodovodní přivaděč z vodní nádrže Želivka do Prahy). Retrieved 27 February 2010. 
  3. ^ http://www.gidrospetsproekt.ru/ru/geografiya-obektov/image-map_rossija/armeniya/gidrotexnicheskij-tonnel-arpa-sevan.html
  4. ^ "都営地下鉄大江戸線 - Wikipedia". ja.wikipedia.org. Retrieved 6 February 2013. 
  5. ^ http://news.xinhuanet.com/fortune/2014-04/15/c_1110253248.htm
  6. ^ "名古屋市営地下鉄名城線 - Wikipedia". ja.wikipedia.org. Retrieved 6 February 2013. 
  7. ^ "名古屋市営地下鉄名港線 - Wikipedia". ja.wikipedia.org. Retrieved 7 February 2013. 
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  9. ^ http://new.onemine.org/search/summary.cfm/EvinosMornos-Tunnel--Greece-Construction-of-a-30-Km-Long-Hydraulic-Tunnel-in-Less-Than-Three-Years-Under-the-Most-Adverse-Geological-Conditions?d=4196E212BCD1388ED3A7769E6B77DD7AF1E26CB727E7188DA9D6416E43747A8F37321
  10. ^ Massachusetts Water Resources Authority (December 2006). "Water System Master Plan". pp. 7–26. 
  11. ^ Structurae [en]: Guadarrama Tunnel (2005)
  12. ^ Massachusetts Water Resources Authority (December 2006). "Water System Master Plan". pp. 7–25. 
  13. ^ http://www.tunnelintelligence.com/awards-in-detail-50.html
  14. ^ "大阪市営地下鉄谷町線 - Wikipedia". ja.wikipedia.org. Retrieved 6 February 2013. 
  15. ^ "The LHC, Facts and figures". CERN. 2008. Retrieved 2 July 2009. 
  16. ^ "Şanlıurfa Sulama Tünelleri ve Tesisleri İnşaatı" (in Turkish). Eren İnşaatı. Retrieved 1 October 2010. 
  17. ^ "Collapse of headrace tunnel after grand opening". Tunnel Talk. February 2010. Retrieved 27 September 2010. 
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  19. ^ a b c d e http://www.powerhousemuseum.com/hsc/snowy/civil.htm
  20. ^ http://www.armtoday.info/default.asp?Lang=_Ru&NewsID=1731&SectionID=0&RegionID=0&Date=03/26/2009&PagePosition=199
  21. ^ 경부고속철도 금정터널 개요 (in Korean). Civil Engineering. 2009-07-06. Retrieved 28 August 2010. 
  22. ^ "ABB starts to make ‘The London Connection’". ABB Group. 2004-08-14. Retrieved 8 February 2009. "a 20km long three-metre diameter tunnel" 
  23. ^ "£200M London Connection Project is Commissioned" (PDF). National Grid plc. September 2005. Retrieved 8 February 2009. "This 20km long tunnel contains one of the longest 400kV XLPE cable circuits to be installed in Europe." 
  24. ^ http://www.springerlink.com/content/ypr7t74670312147/
  25. ^ a b http://www.amel.gr/index.php?id=22&L=1
  26. ^ "Mavi Tünel Project Page" (in Turkish). 
  27. ^ a b c New Tunneling Technology in Japan / Statistical Data
  28. ^ 대우건설 솔안터널 관통식 (in Korean). Asia Economy. 2006-12-07. Retrieved 6 October 2008. 
  29. ^ ClimaxMoly: USA - Colorado - Henderson
  30. ^ Longest Railroad Tunnels
  31. ^ http://www.transportwriter.com/writings/writing4_minetram.htm
  32. ^ Massachusetts Water Resources Authority (December 2006). "Wastewater Master Plan". pp. 3–5, 3–9. 
  33. ^ http://www.railpictures.net/photo/343052/
  34. ^ Table 1
  35. ^ Britannica Online Encyclopedia
  36. ^ [3]
  37. ^ [4]
  38. ^ Galleria di Base del Brennero - Brenner Basistunnel BBT SE - Facts
  39. ^ BBT SE: Did you know...
  40. ^ ÖBB Infrastruktur AG: Wettmannstätten – St. Andrä
  41. ^ ÖBB Infrastruktur AG Press release
  42. ^ 원주~제천 중앙선 복선전철 2011년 6월 착공 (in Korean). Yahoo!. 2010-09-09. Retrieved 19 October 2010. 
  43. ^ "Feasibility study and basic plan of Jungang Line for double track between Wonju and Jecheon". Chunsuk Engineering. Retrieved 19 October 2010. 
  44. ^ Structurae [en]: Iyama Tunnel (2013)
  45. ^ Kaçar, Muhammet (2012-05-13). "Başbakan Ovit Dağı Tüneli'nin temelini attı". Hürriyet (in Turkish). Retrieved 13 May 2012. 
  46. ^ http://www.ametro.gr/page/default.asp?la=2&id=384
  47. ^ http://en.infoglobe.cz/topics-of-interest/do-you-know-that-railway-tunnels/
  48. ^ "Sveriges längsta vägtunnel till Stockholm". 27 January 2009. Archived from the original on 2009-02-17. 
  49. ^ "The design of lot 3 of Struma motorway is completed". stroitelstvo.info (in Bulgarian). 2013-11-18.