قائمة أطول الأنفاق

(تم التحويل من List of longest tunnels)

The southwest portal of the Lærdal Tunnel in Norway, the world's longest road tunnel

This list of longest tunnels ranks tunnels that are at least 13 km (8.1 mi) long. Only continuous tunnels are included. Pipelines, even those that are buried, are excluded. The longest tunnels have been constructed for water distribution, followed by tunnels for railways.

World's longest tunnels (in use)

Type Name Location Length Year Comment
Water supply Delaware Aqueduct الولايات المتحدة New York State, United States 137،000 m (85.128 mi) 1945 4.1 m in diameter (13.2 m2). New York City's main water supply tunnel.
Water supply Päijänne Water Tunnel فنلندا Southern Finland, Finland 120،000 m (74.565 mi) 1982 16 m2 cross section. Main water supply tunnel for the Helsinki metropolitan area in southern Finland, drilled through solid rock.
Metro Suzhou Metro Line 3-11 الصينSuzhou, China 86،542 m (53.775 mi) 2019–2023 Suzhou Metro Line 11 and Line 3 are connected at Weiting station with through trains operating. Longest metro tunnel
Water supply Dahuofang Water Tunnel الصين Liaoning, China 85،320 m (53.015 mi) 2009 8 m in diameter[1] (50 m2 cross section)
Water supply Orange–Fish River Tunnel جنوب أفريقيا South Africa 82،800 m (51.450 mi) 1972 Longest continuous enclosed aqueduct in the Southern Hemisphere (22.5 m2 cross section). Built to divert water from the Orange River to the Great Fish River.
Water supply Bolmen Water Tunnel السويد Kronoberg/​Scania, Sweden 82،000 m (50.952 mi) 1987 8 m2 cross section
Metro Istanbul Metro (Line M11) تركيا Istanbul, Turkey 69،000 m (42.875 mi) 2023–2025 Longest metro tunnel in Europe and longest tunnel in Turkey
Metro Chengdu Metro Line 6 الصين Chengdu, China 68،223 m (42.392 mi) 2020
­ Neelum–Jhelum Hydropower Tunnel پاكستان ­, Azad Kashmir, Pakistan 68،000 m (42.253 mi) 2017 Part of the 969 MW Neelum–Jhelum Hydropower Plant
­ Tunel Emisor Oriente المكسيك Mexico City, Mexico 62،500 m (38.836 mi) 2019[2] 7 m in diameter. Longest wastewater tunnel.
Metro Qingdao Metro Line 1 الصين Qingdao, China 59،818 m (37.169 mi) 2020–2021
Metro Guangzhou Metro Line 18 الصين Guangzhou, China 58،300 m (36.226 mi) 2021
Metro Guangzhou Metro Line 3 الصين Guangzhou, China 57،930 m (35.996 mi)
(Excl. branch) 		2005–2018
Metro Moscow Metro Bolshaya Koltsevaya line روسيا Moscow, Russia 57،538 m (35.752 mi)[3][4]
(Excl. branch) 		2018–2023[5] Longest metro/rapid transit circular line
Railway Twin Tube Gotthard Base Tunnel سويسرا Central Swiss Alps, Switzerland 57،104 m (35.483 mi) and 57،017 m (35.429 mi) 2016 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 الصين Beijing, China 57،100 m (35.480 mi) 2008–2013
Railway Single Tube Seikan Tunnel اليابان Tsugaru Strait, Japan 53،850 m (33.461 mi) 1988 74 m2; longest railway tunnel until 2016. Longest tunnel with an undersea section, running between Honshu and Hokkaido. Undersea section measures 23.3 kilometres (14.5 mi).
Metro Beijing Subway Line 6 الصين Beijing, China 53،400 m (33.181 mi) 2012–2018
Water supply Želivka Water Tunnel[8] التشيك Central Bohemian Region, Czech Republic 51،970 m (32.293 mi) 1972 9–12 m2
Metro Seoul Subway: Line 5 كوريا الجنوبية Seoul, South Korea 51،700 m (32.125 mi)
(longest branch) 		1995–2021 Longest metro/rapid transit tunnel until Guangzhou Metro Line 3 extension opened in 2010, crosses west to east under the Seoul Capital Area.
­ ­ Stolln[9] ألمانيا Freiberg Mining Field, Germany 50،900 m (31.628 mi) 1844–1882 6 m2 cross section, longest tunnel until 1945. Part of a UNESCO World Heritage Site.
Railway Twin Tube Channel Tunnel المملكة المتحدة فرنسا English Channel, United Kingdom/​France 50،450 m (31.348 mi) 1994 Second longest railway tunnel until 2016. Longest underwater section, longest international tunnel (2×45 m2 + 1×18 m2), running between Folkestone, Kent, and Coquelles, Pas-de-Calais.
Railway Single Tube Yulhyeon Tunnel كوريا الجنوبية Seoul Capital Area, South Korea 50،300 m (31.255 mi)[10] 2016[11] 107 m2, part of the Suseo high-speed railway.
­ Tunel Emisor Central المكسيك Mexico City, Mexico 49،742 m (30.908 mi) 1975 6.5 m in diameter
Water supply River Arpa – Lake Sevan tunnel[12][13] أرمنيا Armenia (at the time of construction الاتحاد السوڤيتي Soviet Union) 48،358 m (30.048 mi)[14] 1981 Longest tunnel built to restore ecological balance. Transfers water from the Arpa to Lake Sevan to recover its level.[15]
Water supply Pahang – Selangor Raw Water Transfer Project[16][17] ماليزيا Pahang & Selangor, Malaysia 44،600 m (27.713 mi) 2014 5.2 m in diameter
Metro Wuhan Metro Line 2 الصين Wuhan, China 44،347 m (27.556 mi) 2012–2019
Metro Lyublinsko-Dmitrovskaya Line (Zyablikovo – Fiztekh) روسيا Moscow Metro, Russia (construction started at the time of الاتحاد السوڤيتي Soviet Union) 44،300 m (27.527 mi) 1995–2023
Metro Shanghai Subway: Line 7 الصين Shanghai, China 44،200 m (27.465 mi) 2009–2010
Water supply #1 Tunnel, Yellow River Diversion to Shanxi North Line الصين Shanxi, China 43،670 m (27.135 mi) 2011 See South–North Water Transfer Project
Water supply #7 Tunnel, Yellow River Diversion to Shanxi South Line الصين Shanxi, China 43،500 m (27.030 mi) 2002 See South–North Water Transfer Project
Metro Beijing Subway Line 8 الصين Beijing, China 42،600 m (26.470 mi) 2012–2021
Metro Shanghai Metro Line 15 الصين Shanghai, China 42،300 m (26.284 mi) 2021
Metro Chengdu Metro Line 5 الصين Chengdu, China 42،300 m (26.284 mi) 2019
Metro Beijing Subway Line 14 الصين Beijing, China 42،000 m (26.098 mi) 2015–2021
Metro Tianjin Metro Line 6 الصين Tianjin, China 42،000 m (26.098 mi) 2016–2021
Metro Downtown line سنغافورة MRT, Singapore 41،900 m (26.035 mi)[18][19] 2013–2017 Longest rapid transit line in South East Asia
Metro Nanjing Metro Line 3 الصين Nanjing, China 41،567 m (25.829 mi) 2011–2015 From Xinghuolu station to Mozhoudonglu station.
Metro Suzhou Metro: Line 4 الصين Suzhou, China 41،500 m (25.787 mi) 2017
Metro ­ (Altufyevo – Bulvar Dmitriya Donskogo) روسيا Moscow Metro, Russia (construction started at the time of الاتحاد السوڤيتي Soviet Union) 41،470 m (25.768 mi) 1983–2002
Metro Madrid Metro: Line 12 (MetroSur) إسپانيا Madrid, Spain 40،900 m (25.414 mi) 1999–2003
Metro Tocho-mae – Shiodome – Hikarigaoka (Toei Oedo Line) اليابان Tokyo, Japan 40،700 m (25.290 mi) 1991–2000 Tokyo Metropolitan Bureau of Transportation
­ Kárahnjúkar Hydropower Plant آيسلندا ­, Iceland 39،700 m (24.668 mi) 2003–2007 7.2–7.6 meters in diameter (45 m2 cross section). Part of a wider complex of tunnels that are 72 kilometers in length combined.
Water supply Quabbin Aqueduct الولايات المتحدة ­, United States 39،600 m (24.606 mi) 1933
Metro Chengdu Metro Line 4 الصين Chengdu, China 39،300 m (24.420 mi) 2015–2017
Metro Chengdu Metro Line 7 الصين Chengdu, China 38،600 m (23.985 mi) 2017
Metro Seoul Subway: Line 3 (Apgujeong–Ogeum) كوريا الجنوبية Seoul, South Korea 38،200 m (23.736 mi) 1985–2010
Metro Kaluzhsko-Rizhskaya Line (­ – Medvedkovo) روسيا Moscow Metro, Russia (at the time of construction الاتحاد السوڤيتي Soviet Union) 37،800 m (23.488 mi) 1958–1990 Longest railway tunnel 1978–1984 and from November 1987 till March 1988; longest metro/rapid transit tunnel 1990–1995
Metro Shenzhen Subway: Luobao Line الصين Shenzhen, China 37،497 m (23.300 mi) 2009–2011
Metro Chengdu Metro Line 1 الصين Chengdu, China 37،470 m (23.283 mi)
(Excl. branch) 		2010–2018
Water supply Harold D. Roberts Tunnel[20] الولايات المتحدة Colorado, United States 37،464 m (23.279 mi) 1962 Diverts water from the Colorado River watershed to the South Platte River watershed for use in the Denver metropolitan area. Flows across Continental Divide. 4,465 feet (1,361 m) below the surface at its deepest point.
Metro Shenzhen Subway: Shekou Line الصين Shenzhen, China 36،146 m (22.460 mi) 2010–2011
Water supply Dawushan Tunnel, Niulan River Diversion to Dianchi الصين Yunnan, China 36،137 m (22.454 mi) 2013
Metro Circle line سنغافورة MRT, Singapore 35،700 m (22.183 mi) 2009–2012
Metro Busan Metro: Line 2 (Dongwon–Jangsan) كوريا الجنوبية Busan, South Korea 35،500 m (22.059 mi) 1999–2009
Railway Songshan Lake Tunnel[21] الصين Dongguan, China 35،391 m (21.991 mi) 2016 Dongguan–Huizhou intercity railway, longest railway tunnel in China
Metro Seoul Subway: Line 6 كوريا الجنوبية Seoul, South Korea 35،100 m (21.810 mi) 2001
Metro Seoul Subway: Line 7 (Cheongdam–Bupyeong-gu Office) كوريا الجنوبية Seoul, Incheon, Bucheon and ­ in South Korea 35،100 m (21.810 mi) 2000–2012
Metro Tianjin Metro: Line 5 الصين Tianjin, China 34،800 m (21.624 mi) 2018–2021
Railway Single Track Lötschberg Base Tunnel سويسرا Bernese Alps, Switzerland 34،577 m (21.485 mi) 2007 Longest land railway tunnel until Gotthard Base Tunnel was opened; two single track tubes along 12 km, only single track along 22 km. Part of the NRLA.
Metro Istanbul Metro (Line M4) تركيا Istanbul, Turkey 34،050 m (21.158 mi) 2012
Water supply Tyne-Tees Tunnel المملكة المتحدة England, United Kingdom 34،000 m (21.127 mi) 1983 (and earlier) Northumbrian water supply tunnel.
Metro Guangzhou Metro: Line 8 الصين Guangzhou, China 33،900 m (21.064 mi) 2010–2020
Metro Mumbai Metro: Line 3 (Aqua Line) الهند Mumbai, India 33،500 m (20.816 mi) 2021
Metro Madrid Metro: Line 7 إسپانيا Madrid, Spain 32،919 m (20.455 mi) 1974–2007
Railway Twin Tube Koralm Tunnel النمسا Koralpe, Austria 32،900 m (20.443 mi) 2025[22] Part of the Koralm Railway; boring of main tunnel started at the west portal in May 2010.[23]
Railway Twin Tube New Guanjiao Tunnel الصين Qinghai, China 32،645 m (20.285 mi) 2014[24] Longest tunnel on the upgraded dual-track Xining–Golmud section of Qinghai–Tibet Railway, longest railway tunnel in China until 2016, 3323.58–3380.97 meters above sea level
Metro Meijo Line – Meikō Line اليابان Nagoya Municipal Subway, Japan 32،400 m (20.132 mi) 1965–2004
Metro Guangzhou Metro: Line 2 الصين Guangzhou, China 32،000 m (19.884 mi) 2010
Metro Rathaus Spandau–Rudow (U7) ألمانيا Berlin U-Bahn, Germany 31،800 m (19.760 mi) 1924–1984
Water supply Gerede Water Transmission Tunnel[25] تركيا Ankara, Turkey 31،592 m (19.630 mi) 2019[26] 5.2 m in diameter
Metro Seoul Subway: Bundang Line (Seoul Forest–Jukjeon) كوريا الجنوبية Seoul, Seongnam and Yongin in South Korea 31،400 m (19.511 mi) 1994–2012
Metro Daegu Metro: Line 2 كوريا الجنوبية Daegu and Gyeongsan in South Korea 31،400 m (19.511 mi) 2005–2012
­ Milwaukee Metropolitan Sewerage District Deep Tunnel Phase 1 الولايات المتحدة Milwaukee County, Wisconsin, United States 31،221 m (19.400 mi) 1993 405 million gallons of combined sewage storage designed to prevent sewage overflow into Lake Michigan. The largest of three phases, totalling 521 million gallons of storage.[27]
Metro Beijing Subway: Line 1 الصين Beijing, China 31،040 m (19.287 mi) 1971–2000
Metro Bucharest Metro: Line M1 رومانيا Bucharest, Romania 31،010 m (19.269 mi) 1979–1992 8,670 m, shared with M3 line. Nether less one continuous tunnel.
Metro Côte-Vertu – Montmorency (Line 2 Orange) كندا Montreal Metro, Canada 30،798 m (19.137 mi) 1966–2007
Metro Shanghai Subway: Line 2 الصين Shanghai, China 30،187 m (18.757 mi) 2000
Metro Parnas – Kupchino (line 2) روسيا Saint Petersburg Metro, Russia (construction started at the time of الاتحاد السوڤيتي Soviet Union) 30،100 m (18.703 mi) 1961–2006
Metro Guangzhou Metro: Line 5 الصين Guangzhou, China 29،900 m (18.579 mi) 2009
Water supply Shandaken Tunnel الولايات المتحدة Catskill Mountains, New York, United States 29،780 m (18.504 mi) 1924
Metro Shanghai Subway: Line 8 الصين Shanghai, China 29،650 m (18.424 mi) 2007–2009
Metro Prospekt Veteranov – Devyatkino (line 1) روسيا Saint Petersburg Metro, Russia (at the time of construction الاتحاد السوڤيتي Soviet Union) 29،600 m (18.393 mi) 1955–1978
Metro Shanghai Subway: Line 10 الصين Shanghai, China 29،600 m (18.393 mi) 2010
Water supply Evinos – Mornos Tunnel[28][29] اليونان Aetolia-Acarnania, Greece 29،400 m (18.268 mi) 1995
Metro Chengdu Metro Line 2 الصين Chengdu, China 29،000 m (18.020 mi) 2012–2013 Only includes phases 1 and 2
Water supply Hultman Aqueduct[30] الولايات المتحدة Eastern ­, United States 28،640 m (17.796 mi) 1939 11.5 ft (3.5 m) to 14 ft (4.3 m) diameter (15m2 cross section); offline for rehabilitation
Metro Sydney Metro City أستراليا Sydney, New South Wales, Australia 28،500 m (17.709 mi) 2019-2024 The line runs from Sydenham to Chatswood and extends to the 13 km Epping to Chatswood rail link. It forms part of the wider Sydney Metro project.
Railway Twin Tube Guadarrama Tunnel[31] إسپانيا Sierra de Guadarrama, Spain 28،377 m (17.633 mi) 2007
Water supply MetroWest Water Supply Tunnel[32] الولايات المتحدة Eastern ­, United States 28،300 m (17.585 mi) 2003 14 ft (4.3 m) diameter (15m2 cross section)
Railway Twin Tube West Qinling Tunnel الصين Gansu, China 28،236 m (17.545 mi) 2016 Chongqing–Lanzhou railway
Metro Taipei Metro: Blue Line تايوان Taipei, Taiwan 28،200 m (17.523 mi) 1999–2015
Metro Beijing Subway: Line 4 الصين Beijing, China 28،165 m (17.501 mi) 2009–2010
Metro Seoul Subway: Line 9 (Gimpo Airport–Sports Complex) كوريا الجنوبية Seoul, South Korea 28،100 m (17.461 mi) 2009–2015
Railway Single Tube Taihang Tunnel[33] الصين Taihang Mountains, China 27،848 m (17.304 mi) 2007 On Shijiazhuang–Taiyuan high-speed railway
Metro Morden–East Finchley (Northern line) المملكة المتحدة ­, England, United Kingdom 27،800 m (17.274 mi) 1890–1940 Longest railway tunnel in UK
Metro Shenyang Subway: Line 1 الصين Shenyang, China 27،800 m (17.274 mi) 2010
Water supply Melamchi Water Tunnel نيپال Melamchi to Kathmandu, Nepal 27،000 m (16.777 mi) 2021[34] See Melamchi Water Supply Project
Metro Seoul Subway: Incheon Line 1 (Bakchon–International Business District) كوريا الجنوبية Incheon, South Korea 27،000 m (16.777 mi) 1999–2009
Metro Dainichi–Nagahara (Tanimachi Line) اليابان Osaka Metro, Japan 26،900 m (16.715 mi) 1967–1983
Particle ­ LEP Tunnel[35] سويسرا فرنسا CERN, Switzerland/​France 26،659 m (16.565 mi) 1988 (­) 11.3–15.9 m2 circular ring, now used by Large Hadron Collider
Railway Single Tube Hakkōda Tunnel (Tōhoku Shinkansen) اليابان Hakkōda Mountains, Japan 26،455 m (16.438 mi) 2010 64–74 m2
Water supply Şanlıurfa Irrigation Tunnels تركيا Turkey 26،400 m (16.404 mi) 2005[36]
Metro Shanghai Subway: Line 9 الصين Shanghai, China 26،263 m (16.319 mi) 2007–2010
­ Gilgel Gibe II Power Station headrace tunnel إثيوپيا Ethiopia 26،000 m (16.156 mi) 2005–2009 Tunnel partially collapsed, was repaired in 2010.[37][38]
Water supply #5 Tunnel, Yellow River Diversion to Shanxi South Line الصين Shanxi, China 26،000 m (16.156 mi) 2002 See South–North Water Transfer Project
Metro Daegu Metro: Line 1 كوريا الجنوبية Daegu, South Korea 25،900 m (16.094 mi) 1997–2002
Metro MRT Blue Line تايلند Bangkok, Thailand 25،800 m (16.031 mi) 2004 Second phase opened in September 2019
Railway Single Tube Iwate-Ichinohe Tunnel اليابان Ōu Mountains, Japan 25،810 m (16.038 mi) 2002 Part of the Tōhoku Shinkansen
Water supply Sudbury Aqueduct الولايات المتحدة Eastern ­, United States 25،750 m (16.000 mi) 1878 Emergency backup use
Metro Suzhou Metro: Line 1 الصين Suzhou, China 25،739 m (15.993 mi) 2007–2011
Metro Line 3 (Athens Metro)[39] اليونان Athens, Greece 25،200 m (15.659 mi) 1992–2022 Line 3 is actually 46.5 km long, but only 25.2 km of it are underground.
Metro Helsinki metro (Kivenlahti–Sörnäinen) فنلندا

Espoo and Helsinki, Finland

25،200 m (15.659 mi) 1982–2022
Metro Taipei Metro: Orange Line (Huilong – Nanshijiao) تايوان Taipei, Taiwan 25،100 m (15.596 mi)
(Excl. branch) 		1998–2013
Railway Twin Tube Musil Tunnel[40][41] كوريا الجنوبية Wonju–Jecheon (Jungang Line), South Korea 25،080 m (15.584 mi) 2021[42]
Waste-water Thames Tideway Tunnel المملكة المتحدة London, England, United Kingdom 25،000 m (15.534 mi) 2025 7.2 m in diameter
Railway Twin Tube Pajares Base Tunnel إسپانيا Asturias/​León, Spain 24،667 m (15.327 mi) 2023
Road Lærdal Tunnel النرويج Lærdal–Aurland, Norway 24،510 m (15.230 mi) 2000 World's longest road tunnel
Metro Yellow Line (Delhi Metro): GTB Nagar – Qutub Minar[43] الهند Delhi, India 24،000 m (14.913 mi) 2004–2010 Longest tunnel in India
Metro Madrid Metro: Line 1 إسپانيا Madrid, Spain 23،876 m (14.836 mi) 1919–2007
Railway Lainzer/​­ النمسا west of Vienna, Austria 23،844 m (14.816 mi) 2012 ­ 2007
­ Harbour Area Treatment Scheme (HATS) Stage 1[44] هونگ كونگ Hong Kong, China (construction started in هونگ كونگ البريطانية British Hong Kong) 23،600 m (14.664 mi) 2001
Water supply Eucumbene-Snowy Tunnel[45][46] أستراليا New South Wales, Australia 23،500 m (14.602 mi) 1965 Part of the 145 km tunnel network of the Snowy Mountains Scheme
Railway South Lüliangshan Tunnel[47] الصين Shanxi, China 23،473 m (14.585 mi) 2014[48] 2 tubes, part of Shanxi–Henan–Shandong railway
Metro Madrid Metro: Line 6 إسپانيا Madrid, Spain 23،472 m (14.585 mi) 1979–2007
Metro Angrignon – Honoré-Beaugrand (Line 1 Green) كندا Montreal Metro, Canada 23،262 m (14.454 mi) 1966–2007
Metro Warsaw Metro Line 1: Kabaty – Młociny پولندا Warsaw, Poland 23،100 m (14.354 mi) 1983–2008
Metro Beijing Subway: Line 2 الصين Beijing, China 23،100 m (14.354 mi) 1969–1987
­ Xinma Hydroelectric Power Station Water Tunnel الصين Sichuan, China 22،975 m (14.276 mi) 2009
Railway Iiyama Tunnel[49] اليابان Iiyama, Japan 22،225 m (13.810 mi) 2015 Part of the Hokuriku Shinkansen
Railway Daishimizu Tunnel اليابان Mount Tanigawa, Japan 22،221 m (13.807 mi) 1982 Longest railway tunnel until Seikan Tunnel was opened.
Water supply Eucumbene-Tumut Tunnel[45] أستراليا New South Wales, Australia 22،200 m (13.794 mi) 1959 Part of the 145 km tunnel network of the Snowy Mountains Scheme
Road Twin Tube Tianshan Shengli Tunnel الصين Xinjiang, China 22،130 m (13.751 mi)[50] 2025[51] Part of the Ürümqi–Yuli Expressway, the tunnel has been completed and opened to traffic on 26 December 2025.[52] Construction started in 2020. Bypassing Sengli Daban mountain pass which sits up at 4091 meters above the sea level, it is the longest road tunnel in the world at an altitude of over 4000 m. Tunelling completed in December 2024[53]
Road WestConnex أستراليا Sydney, New South Wales, Australia 22،000 m (13.670 mi) 2023
(2019–2020 partial ­)
Railway Daegwallyeong Tunnel كوريا الجنوبية ­–Gangneung (­), South Korea 21،755 m (13.518 mi) 2017[54]
Water supply Vorotan–Arpa Tunnel[55] أرمنيا Armenia (construction started at the time of الاتحاد السوڤيتي Soviet Union) 21،652 m (13.454 mi) 2004
Water supply & ­ Alva B. Adams Tunnel الولايات المتحدة Colorado, United States 21،100 m (13.111 mi) 1947 (opened)
Particle ­ (­) UNK proton accelerator روسيا Protvino, Russia (construction started at the time of الاتحاد السوڤيتي Soviet Union) 21،000 m (13.049 mi) 1994 (­) Construction stopped after finishing of main circle tunnel, future is unclear
Metro Guangfo Metro الصين Foshan, China 20،900 m (12.987 mi) 2010
Railway Twin Tube Luliangshan Tunnel الصين Shanxi, China 20،785 m (12.915 mi) 2011 2 tubes: left tube is 20785 meters, right tube is 20738 meters
Metro Shanghai Subway: Line 4 الصين Shanghai, China 20،740 m (12.887 mi) 2005–2007
Metro Barcelona Metro: Line 1 إسپانيا Barcelona, Spain 20،700 m (12.862 mi) 1926–1992
­ Ward Tunnel​[citation needed] الولايات المتحدة California, United States 20،610 m (12.806 mi) 1920–1925 Part of the Big Creek Hydroelectric Project of the Southern California Edison Company. Excavated through solid granite.
Metro Busan Metro: Line 1 (Hadan-Busan Nat'l Univ. of Education) كوريا الجنوبية Busan, South Korea 20،600 m (12.800 mi) 1985–1994
Metro Xian Subway: Line 2 الصين Xi'an, China 20،500 m (12.738 mi) 2011
Metro Daejeon Metro: Line 1 كوريا الجنوبية Daejeon, South Korea 20،470 m (12.719 mi) 2006–2007
Metro Nanjing Metro Line 2 الصين Nanjing, China 20،380 m (12.664 mi) 2010
Metro Shanghai Subway: Line 6 الصين Shanghai, China 20،336 m (12.636 mi) 2007
Railway Geumjeong Tunnel[56] كوريا الجنوبية Busan, South Korea 20،323 m (12.628 mi) 2010 Gyeongbu high-speed railway
Metro Baku Metro (Red Line) أذربيجان Baku, Azerbaijan 20،100 m (12.490 mi) 1967–2002
Railway Twin Tube Wushaoling Tunnel الصين Wuwei, China 20،060 m (12.465 mi) 2006–2007 2 tubes: left tube is 20060 meters, right tube is 20050 meters
Water supply Olmos Transandino Project پيرو Guabal, Peru 20،000 m (12.427 mi) 2011[57]
Metro Istanbul Metro (Line M5) تركيا Istanbul, Turkey 20،000 m (12.427 mi) 2017–2018 M5 line (Üsküdar-Çekmeköy) is 20 km with depot line. Line is 30.9 km with Çekmeköy-Sultanbeyli Phase.
Electric power ­ tunnel The London Connection[58] المملكة المتحدة London, England, United Kingdom 20،000 m (12.427 mi) 2005[59] National Grid plc, 3-metre diameter, 400 kilovolt circuit
Railway Twin Tube Simplon Tunnel سويسرا إيطاليا Lepontine Alps, Switzerland/​Italy 19،803 m (12.305 mi) 1906 Parallel tunnel was opened in 1922 (19,824 m long); longest transit tunnel until Daishimizu Tunnel was opened. Part of the NRLA.
­ Mantaro Hydroelectricity Project (es) Tunnel پيرو Colcabamba, Peru 19،800 m (12.303 mi) 1973[60]
Railway Shin Hokuriku Tunnel اليابان Fukui Prefecture, Japan 19،760 m (12.278 mi) 2024 Part of the Hokuriku Shinkansen
Railway Follo Line النرويج Oslo, Norway 19،500 m (12.117 mi) 2022[61][62] Groundbreaking 2014[63]
Metro Koltsevaya Line (Circle Line) روسيا Moscow Metro, Russia (at the time of construction الاتحاد السوڤيتي Soviet Union) 19،400 m (12.055 mi) 1950–1954
­ Futang Hydroelectric Power Station Water Tunnel الصين Sichuan, China 19،319 m (12.004 mi) 2004[64]
Metro Seoul Subway: Bundang Line (Suwon station–Jukjeon station) كوريا الجنوبية Yongin and Suwon in South Korea 19،300 m (11.992 mi) 2007–2013
Railway Single Tube Qamchiq Tunnel[65] اوزبكستان Angren–Pap railway, Uzbekistan 19،200 m (11.930 mi) 2016 Longest non-metro railway tunnel in ex-USSR
Metro North East line سنغافورة MRT, Singapore 19،200 m (11.930 mi) 2003–2011 World's first fully automated and driverless underground rapid transit line
Metro Suzhou Metro: Line 2 الصين Suzhou, China 19،146 m (11.897 mi) 2009–2012
Metro Maskoŭskaja Line بلاروس Minsk Metro, Belarus (construction started at the time of الاتحاد السوڤيتي Soviet Union) 19،100 m (11.868 mi) 1984–2014
Railway Single Track Vereina سويسرا Silvretta, Switzerland 19،058 m (11.842 mi) 1999 Single track with passing loops, metre gauge
Metro Seoul Subway: Line 4 (Ssangmun–Ichon) كوريا الجنوبية Seoul, South Korea 19،000 m (11.806 mi) 1980
­ Harbour Area Treatment Scheme (HATS) Stage 2[66] هونگ كونگ Hong Kong, China 18،800 m (11.682 mi) 2015
Railway Shin-Kanmon Tunnel اليابان Kanmon Straits, Japan 18،713 m (11.628 mi) 1975 Part of the San'yō Shinkansen
­ Shiziping Hydroelectric Power Station Water Tunnel الصين Sichuan, China 18،712 m (11.627 mi) 2010[67]
Railway Single Tube Vaglia إيطاليا Bologna – Firenze, Italy 18،711 m (11.626 mi) 2009 Bologna–Florence high-speed railway
­ Baoxing Hydroelectric Power Station Water Tunnel الصين Sichuan, China 18،676 m (11.605 mi) 2007
Railway Single Tube Apennine Base Tunnel إيطاليا Tuscan-Emilian Apennines, Italy 18،507 m (11.500 mi) 1934
Metro Obolonsko–Teremkivska line أوكرانيا Kyiv Metro, Ukraine (construction started at the time of الاتحاد السوڤيتي Soviet Union) 18،480 m (11.483 mi) 1976–2013
Metro Istanbul Metro (Line M3) تركيا Istanbul, Turkey 18،460 m (11.471 mi) 2013–2022
Railway Twin Tube Qinling Tunnel I-II الصين Qin Mountains, China 18،460 m (11.471 mi) 2000 2 tubes: left tube is 18460 meters, right tube is 18456 meters[68]
­ Tatev Hydroelectric Power Station Water Tunnel أرمنيا Armenia (at the time of construction الاتحاد السوڤيتي Soviet Union) 18،400 m (11.433 mi) 1970
Road Twin Tube Yamate Tunnel اليابان Tokyo, Japan 18،200 m (11.309 mi) 2015
Railway South Taihangshan Tunnel الصين Shanxi, China 18،125 m (11.262 mi) 2014[69] 2 tubes, part of Shanxi–Henan–Shandong railway
Metro Shanghai Subway: Line 1 الصين Shanghai, China 18،110 m (11.253 mi) 1995
Metro ­ Line بلاروس Minsk Metro, Belarus (construction started at the time of الاتحاد السوڤيتي Soviet Union) 18،100 m (11.247 mi) 1990–2005
Road Twin Tube Zhongnanshan Tunnel الصين Shaanxi, China 18،040 m (11.210 mi) 2007 The longest road tunnel in China
Metro Line 2 (Athens Metro)[39] اليونان Athens, Greece 17،900 m (11.123 mi) 1991–2013
Metro Beijing Subway: Line 5 الصين Beijing, China 17،825 m (11.076 mi) 2007
­ Shuakhevi headrace and pressure tunnel جورجيا Shuakhevi, Adjara, Georgia 17،800 m (11.060 mi)[70] 2013–2017
Metro Ankara Metro (AKM-Koru) تركيا Ankara, Turkey 19،660 m (12.216 mi) 1997–2014 M1 line is tunnel in Kızılay between AKM, M2 line is completely underground.
Road Jingpingshan الصين Sichuan, China 17،500 m (10.874 mi) 2008 The deepest transportation tunnel in China
Metro Shenzhen Subway: Longgang Line الصين Shenzhen, China 17،333 m (10.770 mi) 2010–2011
Metro ­ أوكرانيا Kharkiv Metro, Ukraine (at the time of construction الاتحاد السوڤيتي Soviet Union) 17،300 m (10.750 mi) 1975–1978
Metro Seoul Subway: Shinbundang Line كوريا الجنوبية Seoul and Seongnam in South Korea 17،300 m (10.750 mi) 2011
Water supply Mavi Tünel (Blue Tunnel)[71] تركيا Konya, Turkey 17،034 m (10.584 mi) 2012 ­ 2007
Road Gotthard Road Tunnel سويسرا Lepontine Alps, Switzerland 16،918 m (10.512 mi) 1980
Metro İzmir Metro Line M1 تركيا İzmir, Turkey 16،900 m (10.501 mi) 2000–2023 M1 Line is 27 km long, but only 19.8 km of it is underground in two noncontinuous sections. The shorter underground section is 2.9 km long.
Metro Guangzhou Metro: Line 4 الصين Guangzhou, China 16،790 m (10.433 mi) 2005
Metro Barcelona Metro: Line 4 إسپانيا Barcelona, Spain 16،700 m (10.377 mi) 1929–1999
Metro Seoul Subway: Line 2 (Jamsil–Sillim) كوريا الجنوبية Seoul, South Korea 16،700 m (10.377 mi) 1980–1984
Metro Barcelona Metro: Line 3 إسپانيا Barcelona, Spain 16،600 m (10.315 mi) 1924–2001
Metro Barcelona Metro: Line 5 إسپانيا Barcelona, Spain 16،600 m (10.315 mi) 1959–1983
Water supply Murrumbidgee-Eucumbene Tunnel[45] أستراليا New South Wales, Australia 16،600 m (10.315 mi) 1961 Part of the 145 km tunnel network of the Snowy Mountains Scheme
Metro Istanbul Metro (Line M2) تركيا Istanbul, Turkey 16،500 m (10.253 mi) 2000–2009
Metro Beijing Subway: Line 9 الصين Beijing, China 16،500 m (10.253 mi) 2011–2012
­ Jinkang Hydroelectric Power Station Water Tunnel الصين Sichuan, China 16،490 m (10.246 mi) 2006
Metro Madrid Metro: Line 8 إسپانيا Madrid, Spain 16،467 m (10.232 mi) 1998–2007
Metro Guangzhou Metro: Line 1 الصين Guangzhou, China 16،449 m (10.221 mi) 1997
Metro Madrid Metro: Line 3 إسپانيا Madrid, Spain 16،424 m (10.205 mi) 1939–2007
Railway Rokkō Tunnel[72] اليابان Mount Rokkō, Japan 16،250 m (10.097 mi) 1972 Part of the San'yō Shinkansen
Railway Solan Tunnel[73] كوريا الجنوبية Taebaek, Gangwon-do, South Korea 16،240 m (10.091 mi) 2012 Taebaek Line, includes a spiral
­ Twin Tube Kemano T1 and T2[74] كندا Kemano, Canada 16،000 m (9.942 mi) 1954; 2022 T1 was completed in 1954 and T2 was completed in May, 2022,[75] both are in operation.
Metro Seoul Subway: Line 7 (Suraksan–Konkuk University) كوريا الجنوبية Seoul, South Korea 16،000 m (9.942 mi) 1996
Railway ­ (de) النمسا Tyrol, Austria 15،990 m (9.936 mi) 2012
Railway Xiangshan Tunnel 象山隧道 الصين Fujian, China 15،917 m (9.890 mi) 2012 2 tubes, part of Longyan–Xiamen Railway
Railway ­ (de) النمسا Tyrol, Austria 15،840 m (9.843 mi) 2012
Former railway Henderson Tunnel[76][77] الولايات المتحدة Front Range, United States 15،800 m (9.818 mi) 1976 Narrow gauge railway, replaced by a conveyor belt in 1999. Only one portal (served an underground mine)[78]
Metro Istanbul Metro (Line M9) تركيا Istanbul, Turkey 15،800 m (9.818 mi) 2013–2024
Water supply Pandaoling Tunnel, Datong River Diversion to Shaanxi Project الصين Shaanxi, China 15،723 m (9.770 mi) 1994
Metro Copenhagen Metro: City Circle Line الدنمارك Denmark 15،500 m (9.631 mi) 2019 Longest railway tunnel in Denmark and Scandinavia
Metro Budapest Metro: Line 3[79] المجر Hungary 15،500 m (9.631 mi) 1976–1990 Line 3 is actually 17.39 km long, but only 15.5 km of it is underground.
Railway Single Track Furka Base سويسرا Urner Alps, Switzerland 15،442 m (9.595 mi) 1982 Single track with passing loops, metre gauge
Railway Twin Tube Ceneri Base Tunnel سويسرا Lepontine Alps, Switzerland 15،400 m (9.569 mi) 2020 Part of the NRLA
Metro Seoul Subway: Line 3 (Gupabal–Geumho) كوريا الجنوبية Seoul, South Korea 15،400 m (9.569 mi) 1985
Metro Tianjin Subway: Line 1 الصين Tianjin, China 15،378 m (9.555 mi) 1976–2006
Railway Haruna Tunnel اليابان Gunma Prefecture, Japan 15،350 m (9.538 mi) 1982 Part of the Jōetsu Shinkansen
Railway Single Track Severomuysky Tunnel روسيا ­, Russia (construction started at the time of الاتحاد السوڤيتي Soviet Union) 15،343 m (9.534 mi) 2003
­ Deer Island Outfall Tunnel[80] الولايات المتحدة Deer Island, Boston, ­, United States 15،290 m (9.501 mi) 2000 24 ft (7.3 m) diameter (42m2 cross section); discharges treated effluent into Atlantic Ocean
Railway Single Tube Firenzuola إيطاليا Bologna – Firenze, Italy 15،285 m (9.498 mi) 2009 Bologna–Florence high-speed railway
­ Inguri Hydroelectric Power Station Water Tunnel جورجيا Georgia (at the time of construction الاتحاد السوڤيتي Soviet Union) 15،279 m (9.494 mi) 1978
Metro Shanghai Subway: Line 2 الصين Shanghai, China 15،274 m (9.491 mi) 2000 Between Zhanjianggaoke station and Lingkong Station
Water supply Jinquidi Tunnel, Niulan River Diversion to Dianchi الصين Yunnan, China 15،257 m (9.480 mi) 2013
­ Baotan Hydroelectric Power Station Water Tunnel الصين Guangxi, China 15،200 m (9.445 mi) 2010
Railway Gorigamine Tunnel[72] اليابان Nagano Prefecture, Japan 15،175 m (9.429 mi) 1997 Part of the Hokuriku Shinkansen
­ Xuecheng Hydroelectric Power Station Water Tunnel[81] الصين Sichuan, China 15،174 m (9.429 mi) 2007
Railway Single Track Monte Santomarco إيطاليا Paola – Cosenza, Italy 15،040 m (9.345 mi) 1987
Railway Single Tube Gotthard Rail Tunnel سويسرا Lepontine Alps, Switzerland 15،003 m (9.322 mi) 1882 Longest transit tunnel until Simplon Tunnel was opened.
Metro Gwangju Metro: Line 1 (Sotae station–Dosan station) كوريا الجنوبية Gwangju, South Korea 15،000 m (9.321 mi) 2004
Railway Nakayama Tunnel اليابان Gunma Prefecture, Japan 14،857 m (9.232 mi) 1982 Part of the Jōetsu Shinkansen
Water supply Dangara Irrigation Tunnel[82] طاجيكستان Nurek, Tajikistan (at the time of construction الاتحاد السوڤيتي Soviet Union) 14،800 m (9.196 mi) 1987
Railway Cuajone-El Sargento پيرو Ilo-Toquepala / Cuajone Industrial Railroad – Southern Peru Copper Corporation, Peru 14،724 m (9.149 mi)[83] 1975
Railway Single Tube Mount Macdonald Tunnel كندا Rogers Pass, Glacier National Park, Canada 14،723 m (9.148 mi) 1989
Railway (Maglev) Misaka Sasago Tunnel اليابان Yamanashi, Japan 14،613 m (9.080 mi) 1996 Part of the Chuo Shinkansen (Maglev). Already used as Yamanashi Test Track since 1996.
Railway Single Tube Lötschberg Tunnel سويسرا Bernese Alps, Switzerland 14،612 m (9.079 mi) 1913
Water supply Caoe River Diversion Project الصين Zhejiang, China 14،600 m (9.072 mi) 2011
Railway Single Tube Romerike Tunnel النرويج Oslo – Lillestrøm, Norway 14،580 m (9.060 mi) 1999
Railway Fajiushan Tunnel[84] الصين Shanxi, China 14،573 m (9.055 mi) 2014 Part of Shanxi–Henan–Shandong railway.
Water supply Snowy-Geehi Tunnel[45] أستراليا New South Wales, Australia 14،500 m (9.010 mi) 1966 Part of the 145 km tunnel network of the Snowy Mountains Scheme
Metro Baku Metro (Green Line) أذربيجان Baku Azerbaijan 14،500 m (9.010 mi) 1976–2011
Metro Seoul Subway: Line 4 (Isu–Beomgye) كوريا الجنوبية Seoul, Gwacheon and Anyang in South Korea 14،500 m (9.010 mi) 1980–1994
Road Twin Tube Zigana Tunnel تركيا Torul–Maçka, Turkey 14،481 m (8.998 mi)[85] 2023[86] Longest road tunnel in Turkey
­ Jisha Hydroelectric Power Station Water Tunnel الصين Yunnan, China 14،467 m (8.989 mi) 2007
Road Twin Tube Ryfylke Tunnel النرويج Stavanger–Strand, Norway 14،400 m (8.948 mi) 2019 Longest underwater road tunnel in the world
Water supply #6 Tunnel, Yellow River Diversion to Shanxi South Line الصين Shanxi, China 14،400 m (8.948 mi) 2002 See South–North Water Transfer Project
Water supply Ala Mountain Pass Water Supply Project الصين Xinjiang, China 14،346 m (8.914 mi) 2010
Road Twin Tube Ovit Tunnel[87] تركيا Erzurum Province–Rize Province, Turkey 14،346 m (8.914 mi) 2018
Metro Stockholm Metro: Tunnelbana 3 (Blue Line) ­–Hjulsta السويد Stockholm, Sweden 14،300 m (8.886 mi) 1975–1977
Railway Single Tube Dayaoshan Tunnel[88] الصين Nanling Mountains, China 14،294 m (8.882 mi) 1987
Metro Istanbul Metro (Line M8) تركيا Istanbul, Turkey 14،270 m (8.867 mi) 2023[89]
­ Zaramag Hydroelectric Power Station Water Tunnel[90][91] روسيا Ardon River, North Ossetia, Russia 14،226 m (8.840 mi) 2015[92]
Water supply Tooma-Tumut Tunnel[45] أستراليا New South Wales, Australia 14،200 m (8.823 mi) 1961 Part of the 145 km tunnel network of the Snowy Mountains Scheme
Metro Metro Lisbon – Blue (Seagull) Line الپرتغال Lisbon, Portugal 14،000 m (8.699 mi) 1959–2007
Metro MTR – Island line (West of Heng Fa Chuen) هونگ كونگ Hong Kong, China (construction started at the time of هونگ كونگ البريطانية British Hong Kong) 14،000 m (8.699 mi) 1985–2014
Road Arlberg Road Tunnel النمسا Arlberg, Austria 13،972 m (8.682 mi) 1978
Water supply ­ Tunnel, Zhangjiuhe Water Supply Project الصين Yunnan, China 13،941 m (8.663 mi) 2007
­ Dayingshan #4 Hydroelectric Power Station Water Tunnel الصين Yunnan, China 13،932 m (8.657 mi) 2009 8.5 m in diameter (57m2 cross section)
Railway Hokuriku Tunnel اليابان Fukui Prefecture, Japan 13،870 m (8.618 mi) 1962 Part of the Hokuriku Main Line
Railway Single Tube Xiapu Tunnel الصين Fujian, China 13،838 m (8.599 mi) 2009
Railway Twin Tube Yesanguan Tunnel الصين Hubei, China 13،838 m (8.599 mi) 2010 Tube I: 13838 meters, tube II: 13796 meters
­ Centrala Hidroelectrică Lotru-Ciunget رومانيا Ciungetu, Romania 13،719 m (8.525 mi) 1972 5 m in diameter
Railway Single Tube Fréjus (Mont Cenis) فرنسا إيطاليا Alps, France/Italy (construction started in the Kingdom of Sardinia) 13،657 m (8.486 mi) 1871 Longest transit tunnel until Gotthard Tunnel was opened.
Road Twin Tube Xishan Tunnel الصين Shanxi, China 13،654 m (8.484 mi) 2012 Left tube: 13654 meters, right tube: 13570 meters
Railway Single Tube North Tianshan Tunnel الصين Xinjiang, China 13،610 m (8.457 mi) 2009
Railway Marmaray تركيا Istanbul, Turkey 13،600 m (8.451 mi) 2013 Built next to a fault zone, between two continents
Railway Single Track Savio Rail Tunnel فنلندا Helsinki – Kerava, Finland 13،575 m (8.435 mi) 2008
Metro Busan Metro: Line 3 (Suyeong–Deokcheon) كوريا الجنوبية Busan, South Korea 13،500 m (8.389 mi) 2005
Railway Twin Tube Shin Shimizu Tunnel[72] اليابان Mount Tanigawa, Japan 13،500 m (8.389 mi) 1967 Part of the Jōetsu Line
Road Mount Erlang Tunnel الصين Sichuan, China 13،433 m (8.347 mi) 2018 Erlangshan extra-long tunnel part of Yakang Expressway
Railway Single Track Hex River Tunnel[93] جنوب أفريقيا Hex River Pass, South Africa 13،400 m (8.326 mi) 1989
Railway Wonhyo Tunnel[94][95] كوريا الجنوبية Ulsan, South Korea 13،270 m (8.246 mi) 2010 Gyeongbu high-speed railway
Railway Single Tube Dabieshan Tunnel الصين Hubei, China 13،256 m (8.237 mi) 2008
Railway Schlern Tunnel[96] إيطاليا South Tyrol, Italy 13،159 m (8.177 mi) 1993
Railway Single Tube Caponero-Capoverde إيطاليا Genova – Ventimiglia, Italy 13،135 m (8.162 mi) 2001 Includes an underground station ("San Remo")
Road Twin Tube Hongtiguan Tunnel الصين Shanxi, China 13،122 m (8.154 mi) 2013 Left tube: 13122 meters, right tube: 13098 meters
Metro Barcelona Metro line 2 إسپانيا Barcelona, Spain 13،100 m (8.140 mi) 1985–1997
Railway Aki Tunnel اليابان Hiroshima Prefecture, Japan 13،030 m (8.096 mi) 1975 Part of the San'yō Shinkansen
Many more tunnels exist that are shorter than 13،000 متر (8 mi)

World's longest tunnels (under construction)

Type Name Location Length Year Comment
Water Supply Kashuang Water Tunnel الصين Xinjiang, China 280،000 m (173.984 mi) (??) Water transfer from the snow melt of Altai Mountains to the arid region of Xinjiang[97]
Water Supply New York City Water Tunnel No. 3 الولايات المتحدة New York State, United States 96،560 m (60.000 mi) 2032[98] More water supply for New York City. Partially in use.
Metro Paris Métro Line 15 فرنسا Paris/Île-de-France, France 75،000 m (46.603 mi) 2025–2030 Circular line
Water Supply Xianglushan Tunnel الصين Yunnan, China 62،596 m (38.895 mi) 2026 Longest tunnel of the Central Yunnan Water Diversion Project[99]
Railway Twin Tube Mont d'Ambin Base Tunnel فرنسا إيطاليا Cottian Alps, France/​Italy 57،500 m (35.729 mi) 2033[100] Part of the Lyon–Turin high-speed railway. Reconnaissance tunnels under construction since 2002; construction of main tunnel started in 2016.[101]
Railway Twin Tube Brenner Base Tunnel النمسا إيطاليا Stubai Alps, Austria/​Italy 55،000 m (34.175 mi) 2032[102] Construction started in March 2015. Together with the already constructed Inntal Tunnel it will form the world's longest continuous railway tunnel with 64 km.[103][104]
Metro Thomson–East Coast Line سنغافورة MRT, Singapore 43،000 m (26.719 mi) 2026[105] Excluding planned extension
Railway Yigong tunnel الصين Tibet, China 42،500 m (26.408 mi)[106] 2030 Part of the Sichuan–Tibet railway. Construction started in November 2020.[107]
Metro Baku Metro خطأ لوا: expandTemplate: template "Baku Metro color" does not exist. أذربيجان Baku, Azerbaijan 41،800 m (25.973 mi) 2040 Circular line
Metro Athens Metro Line 4 اليونان Athens, Greece 38،200 m (23.736 mi)[108] 2029 Construction of 1st phase started in June 2021,[109] total length may be changed.
Railway Sejila tunnel الصين Tibet, China 37،900 m (23.550 mi)[110] 2030 Part of the Sichuan–Tibet railway. Construction started in November 2020.[111][بحاجة لمصدر غير رئيسي]
Railway (Maglev) Daiichi Shutoken Tunnel [citation needed] اليابان Tokyo, Japan 36،924 m (22.944 mi)[citation needed] 2034 (or later)[112] Part of the Chuo Shinkansen (Maglev)
Mineral ­ Woodsmith Mine Tunnel Potash Project Mineral Transport System (MTS) المملكة المتحدة North York Moors, United Kingdom 36،700 m (22.804 mi)[113] (??)[114] 6 m in diameter[115] incorporating conveyor and maintenance access. Start of construction was planned for 2016, but actually started in April 2019.[116][117]
Railway ­ Tunnel الصين Yunnan, China 34،538 m (21.461 mi) 2025[118] Railway between Dali and Ruili. Construction started in August 2017.[119]
Railway (Maglev) Daiichi Chukyoken Tunnel [citation needed] اليابان Nagoya, Japan 34،210 m (21.257 mi)[citation needed] 2034 (or later)[112] Part of the Chuo Shinkansen (Maglev)
Metro L9 إسپانيا Barcelona, Spain 33،000 m (20.505 mi) (??)
(2009–2016 partial completion) 		Excluding branches. Northern section of the line is in operation since 2009-12-13. Southern section of the line is in operation since 2016-02-12. Future of central section is unclear.
Railway Oshima Tunnel اليابان Hokkaido, Japan 32،675 m (20.303 mi) 2031 Part of the Hokkaido Shinkansen.
Metro Cross Island Line سنغافورة MRT, Singapore 29،000 m (18 mi)[120] (Phase 1 only) 2030 (Phase 1)
2032 (Phase 2) 		Construction of Phase 1 started in January 2023[121]
Metro Baku Metro خطأ لوا: expandTemplate: template "Baku Metro color" does not exist. أذربيجان Baku, Azerbaijan 28،500 m (17.7 mi) 2040 Including extension
Water Supply NCP Canal Main Tunnel سريلانكا ­, Sri Lanka 27،800 m (17.274 mi) 2025 Part of North Central Province Canal under Mahaweli Development programme. Low slope tunnel with gravity flow, 8m in diameter. Supplies water from Moragahakanda Reservoir to North Central and Northern Provinces.[122]
Railway Twin Tube Valico Tunnel إيطاليا Ligurian Apennines, Italy 27،342 m (16.990 mi)[123] 2026 Breakthrough in September 2020.[124] Part of the Tortona–Genoa high-speed railway.
Railway Twin Tube Semmering Base Tunnel النمسا Lower Austria/​Styria, Austria 27،300 m (16.963 mi) 2030[125] Construction of the first contract section started in January 2014.[126] Will cut travel time between Vienna and Graz by 30 minutes and is part of the Baltic–Adriatic Corridor
Road Rogfast tunnel النرويج Randaberg–Kvitsøy–Bokn, Norway 26،700 m (16.591 mi) 2033[127] Construction started in January 2018, halted October 2019 due to expected cost overruns, revised plan and 48% cost increase approved November 2020; construction restarted late 2021.[128] Will be the longest road tunnel in the world, and also the deepest undersea tunnel, 392 متر (1،286 ft) below sea level. It will also have a 4،100 m (2.548 mi) connection tunnel from Kvitsøy to the main tunnel.
Railway Sasson Tunnel اليابان Hokkaido, Japan 26،230 m (16.299 mi) 2031 Part of the Hokkaido Shinkansen.
Metro Suburban Rail Loop East أستراليا Melbourne, Victoria, Australia 26،000 m (16 mi)[أ] 2035[129] Construction started in June 2022.[130] SRL North is still under early planning, projected to be completed by 2053.
Water Supply Mae Taeng–Mae Ngat Tunnel[131] تايلند Chiang Mai, Thailand 25،624 m (15.922 mi) (??)[132] 4 m in diameter. This tunnel is a part of "Mae Taeng–Mae Ngat–Mae Kuang Diversion Tunnel Project"
Railway (Maglev) Minami Alps Tunnel [citation needed] اليابان Akaishi Mountains, Japan 25،019 m (15.546 mi)[citation needed] 2034 (or later)[112] Part of the Chuo Shinkansen (Maglev)
Railway (Maglev) Chuo Alps Tunnel [citation needed] اليابان Kiso Mountains, Japan 23،288 m (14.470 mi)[citation needed] 2034 (or later)[112] Part of the Chuo Shinkansen (Maglev)
Metro Metro Manila Subway الفلپين Metro Manila, Philippines 23،160 m (14.391 mi) 2028 Only for the dedicated mainline between قالب:Stn and قالب:Stn.[133] To be partially opened in 2025.[134]
Railway Thane Creek Tunnel[135] الهند Mumbai, India 21،150 m (13.142 mi)[136] 2028[137] Part of the Mumbai–Ahmedabad high speed railway, construction started in November 2023,[137] 13 m diameter.[138]
Railway Keylong Rail & Road Tunnel [citation needed] الهند Kyelang, India 21،150 m (13.142 mi)[citation needed] Part of the Bhanupali-Leh Railway & Roadway Corridor, construction started in February 2024.
Railway Twin Tube Alia Tunnel[139] إيطاليا Sicily, Italy 19،900 m (12.365 mi)[140] 2030[141] Part of the Palermo–Catania high-speed railway
Metro Baku Metro خطأ لوا: expandTemplate: template "Baku Metro color" does not exist. أذربيجان Baku, Azerbaijan 18،500 m (11.495 mi) 2030 Under construction
Railway Twin Tube Bentong Tunnel (Genting Tunnel) ماليزيا Bentong, Pahang, Malaysia 18،000 m (11.185 mi) 2027 Part of MRL East Coast Rail Link project. Will became the longest tunnel in South East Asia[142]
Railway Shiribeshi Tunnel [citation needed] اليابان Hokkaido, Japan 17،975 m (11.169 mi)[citation needed] 2031 Part of the Hokkaido Shinkansen.
Metro İzmir Metro Line M2 تركيا İzmir, Turkey 17،800 m (11.060 mi)[143] 2027
Road and railway Fehmarn Belt Fixed Link ألمانيا الدنمارك Fehmarn Belt, Germany/​Denmark 17،600 m (10.936 mi) 2029[144] Construction started in January 2021[145]
Railway Tateiwa Tunnel [citation needed] اليابان Hokkaido, Japan 16،980 m (10.551 mi)[citation needed] 2031 Part of the Hokkaido Shinkansen.
Road Förbifart Stockholm[146] السويد Stockholm, Sweden 16،500 m (10.253 mi) 2030[147] Construction started in August 2014
Road Tokyo Gaikan Tunnel [citation needed] اليابان Tokyo, Japan 16،200 m (10.066 mi)[citation needed] 2030 [citation needed] Part of the C3 Tokyo Gaikan Expressway.
Railway Zhoushan underwater tunnel الصين Zhejiang, China 16،200 m (10.066 mi)[148] 2026[148] Part of the Ningbo–Zhoushan railway. Construction started in December 2020.[149]
Railway Twin Tube Chiltern tunnel المملكة المتحدة Chiltern Hills, United Kingdom 16،040 m (9.967 mi) 2029–2033[150] Part of High Speed 2,[151] construction started in May 2021,[152] 9.1 m internal diameter[153]
Railway Uchiura Tunnel [citation needed] اليابان Hokkaido, Japan 15،560 m (9.669 mi)[citation needed] 2031 Part of the Hokkaido Shinkansen.
Railway Twin Tube Schalderer Tunnel (de) إيطاليا South Tyrol, Italy 15،400 m (9.569 mi)[154] 2032 Part of the new Brenner Railway
Railway (Maglev) Ina Sanchi Tunnel [citation needed] اليابان Nagano, Japan 15،300 m (9.507 mi)[citation needed] 2034 (or later)[112] Part of the Chuo Shinkansen (Maglev)
Railway Helanshan Tunnel الصين Ningxia, China 14،900 m (9.258 mi)[citation needed] 2026[155]
Railway Devprayag Rail Tunnel الهند ­, India 14،570 m (9.053 mi)[156] 2026[157] Part of Rishikesh–Karnaprayag line,[158] construction started in 2021[159]
Railway (Maglev) Hiyoshi Tunnel [citation needed] اليابان Gifu, Japan 14،532 m (9.030 mi)[citation needed] 2034 (or later)[112] Part of the Chuo Shinkansen (Maglev)
Road Cumanday Tunnel [citation needed] كولومبيا Cordillera Central, Colombia 14،200 m (8.823 mi)[citation needed]
Road Zoji-la Tunnel الهند Zoji La Pass, India 14،200 m (8.823 mi)[160] 2028[161] Construction started in October 2020[162]
Railway Patalpani Rail Tunnel [citation needed] الهند Madhya Pradesh, India 14،000 m (8.699 mi)[citation needed] 2025 [citation needed]
Metro MRT Orange Line[163] تايلند Bangkok, Thailand 13،770 m (8.556 mi) 2025 Orange Line Phase 1
Railway Twin Tube Northolt tunnel المملكة المتحدة West London, United Kingdom 13،500 m (8.389 mi) 2029–2033[150] Part of High Speed 2, construction started in October 2022.[164]
Metro Istanbul Metro (Line M12) تركيا Istanbul, Turkey 13،030 m (8.096 mi) 2025

World's longest tunnels (advanced planning stage)

Type Name Location Length Year Comment
Water supply Tibet Xinjiang Tunnel الصين Tibet/​Xinjiang, China 1،000،000 m (621.4 mi) ??? China preparing world's longest tunnel to divert Tibet river to desert[165]
Railway Bohai Strait tunnel الصين Bohai Strait, China 123،000 m (76.4 mi) ??? Tunnel between Dalian on the Liaodong Peninsula and Yantai on the Shandong Peninsula.
Railway Talsinki فنلندا إستونيا

Helsinki/​Tallinn, Finland/​Estonia

100،000 m (62.1 mi) After 2030 Awaiting financing
Water supply Qinling Tunnel, Han River Diversion to Wei River [citation needed] الصين Shaanxi, China 98،300 m (61.1 mi)[citation needed] ???
Railway Serra do Mar Tunnel[166] البرازيل Brazil, between São Paulo and Santos 30،000 m (18.6 mi) ???
Road ­ جزر فارو Faroe Islands, linking Suðuroy island to Sandoy island 26،000 m (16.2 mi) After 2030 Feasibility study
Railway Twin Tube Tachlovice Tunnel التشيك Prague/​Beroun, Czech Republic 24،700 m (15.3 mi)[167] After 2035 Project is on hold
Metro İzmir Metro Line M3 تركيا İzmir, Turkey 22،300 m (13.857 mi) 2020s
Metro Istanbul Metro (Line M13) تركيا Istanbul, Turkey 21،900 m (13.6 mi) 2020s
Railway and electricity Grimsel Tunnel سويسرا Grimsel Pass, Switzerland 21،720 m (13.5 mi)[168] After 2030[169] Feasibility study
Railway Twin tube Pacheco Pass Tunnels الولايات المتحدة Pacheco Pass, California, United States 21،000 m (13.0 mi) 2031 To be built as part of the California High-Speed Rail project
Metro Baku Metro      Blue Line أذربيجان Baku Azerbaijan 16،300 m (10.1 mi) ???
Road Twin tube Gohpur – Numaligarh Tunnel الهند Assam, India 15،600 m (9.693 mi)[170] ??? Tunnel under the Brahmaputra River
Road Twin tube Kresna Gorge Tunnel[171] بلغاريا Kresna, Bulgaria 15،400 m (9.6 mi) Cancelled Part of Struma motorway, connecting Sofia and Athens.
Metro Baku Metro      Yellow Line أذربيجان Baku Azerbaijan 14،700 m (9.1 mi) ???
Road Twin tube Agua Negra Tunnel الأرجنتين تشيلي Agua Negra Pass, Argentina/​Chile 14،000 m (8.7 mi) ??? Awaiting ratification by Chile [citation needed]

World's longest tunnels (abandoned)

Type Name Location Length Year Comment
Water supply Gadara Aqueduct Roman Empire 94،000 m (58.4 mi) 129– Water supply for the Decapolis in present-day Jordan

World's longest tunnels (proposed)

انظر أيضاً

مشاع المعرفة فيه ميديا متعلقة بموضوع Tunnel.

ملاحظات

  1. ^ Length does not include SRL North or West.

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قالب:Structural extremes

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