Wiki English 2024
EnglishJapaneseVietnamese

List of longest tunnels

(Redirected from List of longest tunnels in the world)

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.

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

World's longest tunnels (in use)

edit
TypeNameLocationLengthYearComment
Water supplyDelaware Aqueduct New York State, United States137,000 m (85.128 mi)19454.1 m in diameter (13.2 m2). New York City's main water supply tunnel.
Water supplyPäijänne Water Tunnel Southern Finland, Finland120,000 m (74.565 mi)198216 m2 cross section. Main water supply tunnel for southern Finland, including Helsinki, drilled through solid rock.
MetroSuzhou Rail Transit Line 3-11 Suzhou, China86,542 m (53.775 mi)2019–2023Suzhou Rail Transit Line 11 and Line 3 are connected at Weiting station with through trains passing by. Longest metro tunnel
Water supplyDahuofang Water Tunnel Liaoning, China85,320 m (53.015 mi)20098 m in diameter[1] (50 m2 cross section)
Water supplyOrange–Fish River Tunnel South Africa82,800 m (51.450 mi)1972Longest 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 supplyBolmen Water Tunnel Kronoberg/Scania, Sweden82,000 m (50.952 mi)19878 m2 cross section
MetroChengdu Metro Line 6 Chengdu, China68,223 m (42.392 mi)2020Longest (independent single-line) metro/rapid transit tunnel
HydroelectricNeelum–Jhelum Hydropower Tunnel Muzaffarabad, Azad Kashmir, Pakistan68,000 m (42.253 mi)2017Part of the 969 MW Neelum–Jhelum Hydropower Plant
WastewaterTunel Emisor Oriente Mexico City, Mexico62,500 m (38.836 mi)2019[2]7 m in diameter. Longest wastewater tunnel.
MetroQingdao Metro Line 1 Qingdao, China59,818 m (37.169 mi)2020–2021Second longest metro/rapid transit tunnel
MetroGuangzhou Metro Line 18 Guangzhou, China58,300 m (36.226 mi)2021
MetroGuangzhou Metro Line 3 Guangzhou, China57,930 m (35.996 mi)
(Excl. branch)		2005–2018
MetroMoscow Metro Bolshaya Koltsevaya line Moscow, Russia57,538 m (35.752 mi)[3][4]
(Excl. branch)		2018–2023[5]Longest metro/rapid transit circular line
Railway Twin TubeGotthard Base Tunnel Central Swiss Alps, Switzerland57,104 m (35.483 mi) and 57,017 m (35.429 mi)2016Longest 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.
MetroBeijing Subway Line 10 Beijing, China57,100 m (35.480 mi)2008–2013
Railway Single TubeSeikan Tunnel Tsugaru Strait, Japan53,850 m (33.461 mi)198874 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).
MetroBeijing Subway Line 6 Beijing, China53,400 m (33.181 mi)2012–2018
Water supplyŽelivka Water Tunnel[8] Central Bohemian Region, Czech Republic51,970 m (32.293 mi)19729–12 m2
MetroSeoul Subway: Line 5 Seoul, South Korea51,700 m (32.125 mi)
(longest branch)		1995–2021Longest metro/rapid transit tunnel until Guangzhou Metro Line 3 extension opened in 2010, crosses west to east under the Seoul Capital Area.
MetroIstanbul Metro (Line M11) Istanbul, Turkey51,500 m (32.001 mi)2023-2024Longest tunnel in Turkey
Dewatering AditRothschönberger Stolln[9] Freiberg Mining Field, Germany50,900 m (31.628 mi)1844–18826 m2 cross section, longest tunnel until 1945. Part of a UNESCO World Heritage Site.
Railway Twin TubeChannel Tunnel English Channel, United Kingdom/France50,450 m (31.348 mi)1994Second 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 TubeYulhyeon Tunnel Seoul Capital Area, South Korea50,300 m (31.255 mi)[10]2016[11]107 m2, part of the Suseo high-speed railway.
Water supplyRiver Arpa – Lake Sevan tunnel[12][13] Armenia (at the time of construction Soviet Union)48,358 m (30.048 mi)[14]1981Longest tunnel built to restore ecological balance. Transfers water from the Arpa to Lake Sevan to recover its level.[15]
Water supplyPahang – Selangor Raw Water Transfer Project[16][17] Pahang & Selangor, Malaysia44,600 m (27.713 mi)20145.2 m in diameter
MetroWuhan Metro Line 2 Wuhan, China44,347 m (27.556 mi)2012–2019
MetroShanghai Subway: Line 7 Shanghai, China44,200 m (27.465 mi)2009–2010
Water supply#1 Tunnel, Yellow River Diversion to Shanxi North Line Shanxi, China43,670 m (27.135 mi)2011See South–North Water Transfer Project
Water supply#7 Tunnel, Yellow River Diversion to Shanxi South Line Shanxi, China43,500 m (27.030 mi)2002See South–North Water Transfer Project
MetroBeijing Subway Line 8 Beijing, China42,600 m (26.470 mi)2012–2021
MetroShanghai Metro Line 15 Shanghai, China42,300 m (26.284 mi)2021
MetroChengdu Metro Line 5 Chengdu, China42,300 m (26.284 mi)2019
MetroBeijing Subway Line 14 Beijing, China42,000 m (26.098 mi)2015–2021
MetroTianjin Metro Line 6 Tianjin, China42,000 m (26.098 mi)2016–2021
MetroDowntown line MRT, Singapore41,900 m (26.035 mi)[18][19]2013–2017Longest rapid transit line in South East Asia
MetroNanjing Metro Line 3 Nanjing, China41,567 m (25.829 mi)2011–2015From Xinghuolu station to Mozhoudonglu station.
MetroSuzhou Rail Transit: Line 4 Suzhou, China41,500 m (25.787 mi)2017
MetroSerpukhovsko-Timiryazevskaya Line (Altufyevo – Bulvar Dmitriya Donskogo) Moscow Metro, Russia (construction started at the time of Soviet Union)41,470 m (25.768 mi)1983–2002
MetroMadrid Metro: Line 12 (MetroSur) Madrid, Spain40,900 m (25.414 mi)1999–2003
MetroTocho-mae – Shiodome – Hikarigaoka (Toei Oedo Line) Tokyo, Japan40,700 m (25.290 mi)1991–2000Tokyo Metropolitan Bureau of Transportation
HydroelectricKárahnjúkar Hydropower Plant Fljótsdalshreppur, Iceland39,700 m (24.668 mi)2003–20077.2–7.6 meters in diameter (45 m2 cross section). Part of a wider complex of tunnels that are 72 kilometers in length combined.
Water supplyQuabbin Aqueduct Massachusetts, United States39,600 m (24.606 mi)1933
MetroChengdu Metro Line 4 Chengdu, China39,300 m (24.420 mi)2015–2017
MetroChengdu Metro Line 7 Chengdu, China38,600 m (23.985 mi)2017
MetroSeoul Subway: Line 3 (Apgujeong–Ogeum) Seoul, South Korea38,200 m (23.736 mi)1985–2010
MetroKaluzhsko-Rizhskaya Line (Novoyasenevskaya – Medvedkovo) Moscow Metro, Russia (at the time of construction Soviet Union)37,800 m (23.488 mi)1958–1990Longest railway tunnel 1978–1984 and from November 1987 till March 1988; longest metro/rapid transit tunnel 1990–1995
MetroShenzhen Subway: Luobao Line Shenzhen, China37,497 m (23.300 mi)2009–2011
MetroChengdu Metro Line 1 Chengdu, China37,470 m (23.283 mi)
(Excl. branch)		2010–2018
Water supplyHarold D. Roberts Tunnel[20] Colorado, United States37,464 m (23.279 mi)1962Diverts 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.
MetroShenzhen Subway: Shekou Line Shenzhen, China36,146 m (22.460 mi)2010–2011
Water supplyDawushan Tunnel, Niulan River Diversion to Dianchi Yunnan, China36,137 m (22.454 mi)2013
MetroCircle line MRT, Singapore35,700 m (22.183 mi)2009–2012
MetroBusan Metro: Line 2 (Dongwon–Jangsan) Busan, South Korea35,500 m (22.059 mi)1999–2009
RailwaySongshan Lake Tunnel[21] Dongguan, China35,391 m (21.991 mi)2016Dongguan–Huizhou intercity railway, longest railway tunnel in China
MetroSeoul Subway: Line 6 Seoul, South Korea35,100 m (21.810 mi)2001
MetroSeoul Subway: Line 7 (Cheongdam–Bupyeong-gu Office) Seoul, Incheon, Bucheon and Gwangmyeong in South Korea35,100 m (21.810 mi)2000–2012
MetroTianjin Metro: Line 5 Tianjin, China34,800 m (21.624 mi)2018–2021
Railway Single TrackLötschberg Base Tunnel Bernese Alps, Switzerland34,577 m (21.485 mi)2007Longest 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.
MetroIstanbul Metro (Line M4) Istanbul, Turkey34,050 m (21.158 mi)2012
Water supplyTyne-Tees Tunnel England, United Kingdom34,000 m (21.127 mi)1983 (and earlier)Northumbrian water supply tunnel.
MetroGuangzhou Metro: Line 8 Guangzhou, China33,900 m (21.064 mi)2010–2020
MetroLyublinsko-Dmitrovskaya Line (Zyablikovo – Seligerskaya) Moscow Metro, Russia (construction started at the time of Soviet Union)33,400 m (20.754 mi)1995–2018
MetroMadrid Metro: Line 7 Madrid, Spain32,919 m (20.455 mi)1974–2007
Railway Twin TubeNew Guanjiao Tunnel Qinghai, China32,645 m (20.285 mi)2014[22]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
MetroMeijo Line – Meikō Line Nagoya Municipal Subway, Japan32,400 m (20.132 mi)1965–2004
MetroGuangzhou Metro: Line 2 Guangzhou, China32,000 m (19.884 mi)2010
MetroRathaus Spandau–Rudow (U7) Berlin U-Bahn, Germany31,800 m (19.760 mi)1924–1984
Water supplyGerede Water Transmission Tunnel[23] Ankara, Turkey31,592 m (19.630 mi)2019[24]5.2 m in diameter
MetroSeoul Subway: Bundang Line (Seoul Forest–Jukjeon) Seoul, Seongnam and Yongin in South Korea31,400 m (19.511 mi)1994–2012
MetroDaegu Metro: Line 2 Daegu and Gyeongsan in South Korea31,400 m (19.511 mi)2005–2012
WastewaterMilwaukee Metropolitan Sewerage District Deep Tunnel Phase 1 Milwaukee County, Wisconsin, United States31,221 m (19.400 mi)1993405 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.[25]
MetroBeijing Subway: Line 1 Beijing, China31,040 m (19.287 mi)1971–2000
MetroBucharest Metro: Line M1 Bucharest, Romania31,010 m (19.269 mi)1979–19928,670 m, shared with M3 line. Nether less one continuous tunnel.
MetroCôte-Vertu – Montmorency (Line 2 Orange) Montreal Metro, Canada30,798 m (19.137 mi)1966–2007
MetroShanghai Subway: Line 2 Shanghai, China30,187 m (18.757 mi)2000
MetroParnas – Kupchino (line 2) Saint Petersburg Metro, Russia (construction started at the time of Soviet Union)30,100 m (18.703 mi)1961–2006
MetroGuangzhou Metro: Line 5 Guangzhou, China29,900 m (18.579 mi)2009
Water supplyShandaken Tunnel Catskill Mountains, New York, United States29,780 m (18.504 mi)1924
MetroShanghai Subway: Line 8 Shanghai, China29,650 m (18.424 mi)2007–2009
MetroProspekt Veteranov – Devyatkino (line 1) Saint Petersburg Metro, Russia (at the time of construction Soviet Union)29,600 m (18.393 mi)1955–1978
MetroShanghai Subway: Line 10 Shanghai, China29,600 m (18.393 mi)2010
Water supplyEvinos – Mornos Tunnel[26][27] Aetolia-Acarnania, Greece29,400 m (18.268 mi)1995
MetroChengdu Metro Line 2 Chengdu, China29,000 m (18.020 mi)2012–2013Only includes phases 1 and 2
Water supplyHultman Aqueduct[28] Eastern Massachusetts, United States28,640 m (17.796 mi)193911.5 ft (3.5 m) to 14 ft (4.3 m) diameter (15m2 cross section); offline for rehabilitation
MetroSydney Metro Northwest Sydney, New South Wales, Australia28,500 m (17.709 mi)2019The line incorporates the existing 13 km Epping to Chatswood rail link. It forms part of the wider Sydney Metro project.
Railway Twin TubeGuadarrama Tunnel[29] Sierra de Guadarrama, Spain28,377 m (17.633 mi)2007
Water supplyMetroWest Water Supply Tunnel[30] Eastern Massachusetts, United States28,300 m (17.585 mi)200314 ft (4.3 m) diameter (15m2 cross section)
Railway Twin TubeWest Qinling Tunnel Gansu, China28,236 m (17.545 mi)2016Chongqing–Lanzhou railway
MetroTaipei Metro: Blue Line Taipei, Taiwan28,200 m (17.523 mi)1999–2015
MetroBeijing Subway: Line 4 Beijing, China28,165 m (17.501 mi)2009–2010
MetroSeoul Subway: Line 9 (Gimpo Airport–Sports Complex) Seoul, South Korea28,100 m (17.461 mi)2009–2015
Railway Single TubeTaihang Tunnel[31] Taihang Mountains, China27,848 m (17.304 mi)2007On Shijiazhuang–Taiyuan high-speed railway
MetroMorden–East Finchley (Northern line) London Underground, England, United Kingdom27,800 m (17.274 mi)1890–1940Longest railway tunnel in UK
MetroShenyang Subway: Line 1 Shenyang, China27,800 m (17.274 mi)2010
Water supplyMelamchi Water Tunnel Melamchi to Kathmandu, Nepal27,000 m (16.777 mi)2021[32]See Melamchi Water Supply Project
MetroSeoul Subway: Incheon Line 1 (Bakchon–International Business District) Incheon, South Korea27,000 m (16.777 mi)1999–2009
MetroDainichi–Nagahara (Tanimachi Line) Osaka Metro, Japan26,900 m (16.715 mi)1967–1983
Particle acceleratorLEP Tunnel[33] CERN, Switzerland/France26,659 m (16.565 mi)1988 (breakthrough)11.3–15.9 m2 circular ring, now used by Large Hadron Collider
Railway Single TubeHakkōda Tunnel (Tōhoku Shinkansen) Hakkōda Mountains, Japan26,455 m (16.438 mi)201064–74 m2
Water supplyŞanlıurfa Irrigation Tunnels Turkey26,400 m (16.404 mi)2005[34]
MetroShanghai Subway: Line 9 Shanghai, China26,263 m (16.319 mi)2007–2010
HydroelectricGilgel Gibe II Power Station headrace tunnel Ethiopia26,000 m (16.156 mi)2005–2009Tunnel partially collapsed, was repaired in 2010.[35][36]
Water supply#5 Tunnel, Yellow River Diversion to Shanxi South Line Shanxi, China26,000 m (16.156 mi)2002See South–North Water Transfer Project
MetroDaegu Metro: Line 1 Daegu, South Korea25,900 m (16.094 mi)1997–2002
MetroMRT Blue Line Bangkok, Thailand25,800 m (16.031 mi)2004Second phase will be open in April 2019
Railway Single TubeIwate-Ichinohe Tunnel Ōu Mountains, Japan25,810 m (16.038 mi)2002Part of the Tōhoku Shinkansen
Water supplySudbury Aqueduct Eastern Massachusetts, United States25,750 m (16.000 mi)1878Emergency backup use
MetroSuzhou Rail Transit: Line 1 Suzhou, China25,739 m (15.993 mi)2007–2011
MetroLine 3 (Athens Metro)[37] Athens, Greece25,200 m (15.659 mi)1992–2022Line 3 is actually 46.5 km long, but only 25.2 km of it are underground.
MetroHelsinki metro (Kivenlahti–Sörnäinen)

Espoo and Helsinki, Finland

25,200 m (15.659 mi)1982–2022
MetroTaipei Metro: Orange Line (Huilong – Nanshijiao) Taipei, Taiwan25,100 m (15.596 mi)
(Excl. branch)		1998–2013
Railway Twin TubeMusil Tunnel[38][39] Wonju–Jecheon (Jungang Line), South Korea25,080 m (15.584 mi)2021[40]
Railway Twin TubePajares Base Tunnel Asturias/León, Spain24,667 m (15.327 mi)2023
RoadLærdal Tunnel Lærdal – Aurland, Norway24,510 m (15.230 mi)2000The longest road tunnel in the world
MetroYellow Line (Delhi Metro): GTB Nagar – Qutub Minar[41] Delhi, India24,000 m (14.913 mi)2004–2010Longest tunnel in India
MetroMadrid Metro: Line 1 Madrid, Spain23,876 m (14.836 mi)1919–2007
RailwayLainzer/Wienerwaldtunnel west of Vienna, Austria23,844 m (14.816 mi)2012Breakthrough 2007
WastewaterHarbour Area Treatment Scheme (HATS) Stage 1[42] Hong Kong, China (construction started in British Hong Kong)23,600 m (14.664 mi)2001
Water supplyEucumbene-Snowy Tunnel[43][44] New South Wales, Australia23,500 m (14.602 mi)1965Part of the 145 km tunnel network of the Snowy Mountains Scheme
RailwaySouth Lüliangshan Tunnel[45] Shanxi, China23,473 m (14.585 mi)2014[46]2 tubes, part of Shanxi–Henan–Shandong railway
MetroMadrid Metro: Line 6 Madrid, Spain23,472 m (14.585 mi)1979–2007
MetroAngrignon – Honoré-Beaugrand (Line 1 Green) Montreal Metro, Canada23,262 m (14.454 mi)1966–2007
MetroWarsaw Metro Line 1: Kabaty – Młociny Warsaw, Poland23,100 m (14.354 mi)1983–2008
MetroBeijing Subway: Line 2 Beijing, China23,100 m (14.354 mi)1969–1987
HydroelectricXinma Hydroelectric Power Station Water Tunnel Sichuan, China22,975 m (14.276 mi)2009
RailwayIiyama Tunnel[47] Iiyama, Japan22,225 m (13.810 mi)2015Part of the Hokuriku Shinkansen
RailwayDaishimizu Tunnel Mount Tanigawa, Japan22,221 m (13.807 mi)1982Longest railway tunnel until Seikan Tunnel was opened.
Water supplyEucumbene-Tumut Tunnel[43] New South Wales, Australia22,200 m (13.794 mi)1959Part of the 145 km tunnel network of the Snowy Mountains Scheme
RoadWestConnex Sydney, New South Wales, Australia21,800 m (13.546 mi)2023
(2019–2020 partial completion)		New M4 Tunnels opened 2019, WestConnex M8 opened 2020
RailwayDaegwallyeong Tunnel Pyeongchang–Gangneung (Gyeonggang Line), South Korea21,755 m (13.518 mi)2017[48]
Water supplyVorotan–Arpa Tunnel[49] Armenia (construction started at the time of Soviet Union)21,652 m (13.454 mi)2004
Particle accelerator (incomplete)UNK proton accelerator Protvino, Russia (construction started at the time of Soviet Union)21,000 m (13.049 mi)1994 (breakthrough)Construction stopped after finishing of main circle tunnel, future is unclear
MetroGuangfo Metro Foshan, China20,900 m (12.987 mi)2010
Railway Twin TubeLuliangshan Tunnel Shanxi, China20,785 m (12.915 mi)20112 tubes: left tube is 20785 meters, right tube is 20738 meters
MetroShanghai Subway: Line 4 Shanghai, China20,740 m (12.887 mi)2005–2007
MetroBarcelona Metro: Line 1 Barcelona, Spain20,700 m (12.862 mi)1926–1992
HydroelectricWard Tunnel[citation needed] California, United States20,610 m (12.806 mi)1920–1925Part of the Big Creek Hydroelectric Project of the Southern California Edison Company. Excavated through solid granite.
MetroBusan Metro: Line 1 (Hadan-Busan Nat'l Univ. of Education) Busan, South Korea20,600 m (12.800 mi)1985–1994
MetroXian Subway: Line 2 Xi'an, China20,500 m (12.738 mi)2011
MetroDaejeon Metro: Line 1 Daejeon, South Korea20,470 m (12.719 mi)2006–2007
MetroNanjing Metro Line 2 Nanjing, China20,380 m (12.664 mi)2010
MetroShanghai Subway: Line 6 Shanghai, China20,336 m (12.636 mi)2007
RailwayGeumjeong Tunnel[50] Busan, South Korea20,323 m (12.628 mi)2010Gyeongbu high-speed railway
Railway Twin TubeWushaoling Tunnel Wuwei, China20,060 m (12.465 mi)2006–20072 tubes: left tube is 20060 meters, right tube is 20050 meters
Water supplyOlmos Transandino Project Guabal, Peru20,000 m (12.427 mi)2011[51]
MetroIstanbul Metro (Line M5) Istanbul, Turkey20,000 m (12.427 mi)2017–2018M5 line (Üsküdar-Çekmeköy) is 20 km with depot line. Line is 30.9 km with Çekmeköy-Sultanbeyli Phase.
Electric power transmission tunnelThe London Connection[52] London, England, United Kingdom20,000 m (12.427 mi)2005[53]National Grid plc, 3-metre diameter, 400 kilovolt circuit
Railway Twin TubeSimplon Tunnel Lepontine Alps, Switzerland/Italy19,803 m (12.305 mi)1906Parallel tunnel was opened in 1922 (19,824 m long); longest transit tunnel until Daishimizu Tunnel was opened. Part of the NRLA.
HydroelectricMantaro Hydroelectricity Project [es] Tunnel Colcabamba, Peru19,800 m (12.303 mi)1973[54]
RailwayShin Hokuriku Tunnel Fukui Prefecture, Japan19,760 m (12.278 mi)2024Part of the Hokuriku Shinkansen
RailwayFollo Line Oslo, Norway19,500 m (12.117 mi)2022[55][56]Groundbreaking 2014[57]
MetroKoltsevaya Line (Circle Line) Moscow Metro, Russia (at the time of construction Soviet Union)19,400 m (12.055 mi)1950–1954
HydroelectricFutang Hydroelectric Power Station Water Tunnel Sichuan, China19,319 m (12.004 mi)2004[58]
MetroSeoul Subway: Bundang Line (Suwon station–Jukjeon station) Yongin and Suwon in South Korea19,300 m (11.992 mi)2007–2013
Railway Single TubeQamchiq Tunnel[59] Angren–Pap railway, Uzbekistan19,200 m (11.930 mi)2016Longest non-metro railway tunnel in ex-USSR
MetroNorth East line MRT, Singapore19,200 m (11.930 mi)2003–2011World's first fully automated and driverless underground rapid transit line
MetroSuzhou Rail Transit: Line 2 Suzhou, China19,146 m (11.897 mi)2009–2012
MetroMaskoŭskaja Line Minsk Metro, Belarus (construction started at the time of Soviet Union)19,100 m (11.868 mi)1984–2014
Railway Single TrackVereina Silvretta, Switzerland19,058 m (11.842 mi)1999Single track with passing loops, metre gauge
MetroSeoul Subway: Line 4 (Ssangmun–Ichon) Seoul, South Korea19,000 m (11.806 mi)1980
WastewaterHarbour Area Treatment Scheme (HATS) Stage 2[60] Hong Kong, China18,800 m (11.682 mi)2015
RailwayShin-Kanmon Tunnel Kanmon Straits, Japan18,713 m (11.628 mi)1975Part of the San'yō Shinkansen
HydroelectricShiziping Hydroelectric Power Station Water Tunnel Sichuan, China18,712 m (11.627 mi)2010[61]
Railway Single TubeVaglia Bologna – Firenze, Italy18,711 m (11.626 mi)2009Bologna–Florence high-speed railway
HydroelectricBaoxing Hydroelectric Power Station Water Tunnel Sichuan, China18,676 m (11.605 mi)2007
Railway Single TubeApennine Base Tunnel Tuscan-Emilian Apennines, Italy18,507 m (11.500 mi)1934
MetroObolonsko–Teremkivska line Kyiv Metro, Ukraine (construction started at the time of Soviet Union)18,480 m (11.483 mi)1976–2013
MetroIstanbul Metro (Line M3) Istanbul, Turkey18,460 m (11.471 mi)2013-2022
Railway Twin TubeQinling Tunnel I-II Qin Mountains, China18,460 m (11.471 mi)20002 tubes: left tube is 18460 meters, right tube is 18456 meters[62]
HydroelectricTatev Hydroelectric Power Station Water Tunnel Armenia (at the time of construction Soviet Union)18,400 m (11.433 mi)1970
Road Twin TubeYamate Tunnel Tokyo, Japan

18,200 m (11.309 mi)

2015
RailwaySouth Taihangshan Tunnel Shanxi, China18,125 m (11.262 mi)2014[63]2 tubes, part of Shanxi–Henan–Shandong railway
MetroShanghai Subway: Line 1 Shanghai, China18,110 m (11.253 mi)1995
MetroAvtozavodskaya Line Minsk Metro, Belarus (construction started at the time of Soviet Union)18,100 m (11.247 mi)1990–2005
Road Twin TubeZhongnanshan Tunnel Shaanxi, China18,040 m (11.210 mi)2007The longest road tunnel in China
MetroLine 2 (Athens Metro)[37] Athens, Greece17,900 m (11.123 mi)1991–2013
MetroBeijing Subway: Line 5 Beijing, China17,825 m (11.076 mi)2007
HydroelectricShuakhevi headrace and pressure tunnel Shuakhevi, Adjara, Georgia17,800 m (11.060 mi)[64]2013–2017
MetroAnkara Metro (AKM-Koru) Ankara, Turkey19,660 m (12.216 mi)1997–2014M1 line is tunnel in Kızılay between AKM, M2 line is completely underground.
RoadJingpingshan Sichuan, China17,500 m (10.874 mi)2008The deepest transportation tunnel in China
MetroShenzhen Subway: Longgang Line Shenzhen, China17,333 m (10.770 mi)2010–2011
MetroKholodnohirsko–Zavodska Line Kharkiv Metro, Ukraine (at the time of construction Soviet Union)17,300 m (10.750 mi)1975–1978
MetroSeoul Subway: Shinbundang Line Seoul and Seongnam in South Korea17,300 m (10.750 mi)2011
Water supplyMavi Tünel (Blue Tunnel)[65] Konya, Turkey17,034 m (10.584 mi)2012Breakthrough 2007
RoadGotthard Road Tunnel Lepontine Alps, Switzerland16,918 m (10.512 mi)1980
MetroGuangzhou Metro: Line 4 Guangzhou, China16,790 m (10.433 mi)2005
Metroİzmir Metro Line M1 İzmir, Turkey16,750 m (10.408 mi)2000–2023
MetroBarcelona Metro: Line 4 Barcelona, Spain16,700 m (10.377 mi)1929–1999
MetroSeoul Subway: Line 2 (Jamsil–Sillim) Seoul, South Korea16,700 m (10.377 mi)1980–1984
MetroBarcelona Metro: Line 3 Barcelona, Spain16,600 m (10.315 mi)1924–2001
MetroBarcelona Metro: Line 5 Barcelona, Spain16,600 m (10.315 mi)1959–1983
Water supplyMurrumbidgee-Eucumbene Tunnel[43] New South Wales, Australia16,600 m (10.315 mi)1961Part of the 145 km tunnel network of the Snowy Mountains Scheme
MetroIstanbul Metro (Line M2) Istanbul, Turkey16,500 m (10.253 mi)2000–2009
MetroBeijing Subway: Line 9 Beijing, China16,500 m (10.253 mi)2011–2012
HydroelectricJinkang Hydroelectric Power Station Water Tunnel Sichuan, China16,490 m (10.246 mi)2006
MetroMadrid Metro: Line 8 Madrid, Spain16,467 m (10.232 mi)1998–2007
MetroGuangzhou Metro: Line 1 Guangzhou, China16,449 m (10.221 mi)1997
MetroMadrid Metro: Line 3 Madrid, Spain16,424 m (10.205 mi)1939–2007
RailwayRokkō Tunnel[66] Mount Rokkō, Japan16,250 m (10.097 mi)1972Part of the San'yō Shinkansen
RailwaySolan Tunnel[67] Taebaek, Gangwon-do, South Korea16,240 m (10.091 mi)2012Taebaek Line, includes a spiral
Hydroelectric Twin TubeKemano T1 and T2[68] Kemano, Canada16,000 m (9.942 mi)1954; 2022T1 was completed in 1954 and T2 was completed in May, 2022,[69] both are in operation.
MetroSeoul Subway: Line 7 (Suraksan–Konkuk University) Seoul, South Korea16,000 m (9.942 mi)1996
RailwayMünsterertunnel [de] Tyrol, Austria15,990 m (9.936 mi)2012
RailwayXiangshan Tunnel 象山隧道 Fujian, China15,917 m (9.890 mi)20122 tubes, part of Longyan–Xiamen Railway
RailwayTerfnertunnel [de] Tyrol, Austria15,840 m (9.843 mi)2012
Former railwayHenderson Tunnel[70][71] Front Range, United States15,800 m (9.818 mi)1976Narrow gauge railway, replaced by a conveyor belt in 1999. Only one portal (served an underground mine)[72]
MetroIstanbul Metro (Line M9) Istanbul, Turkey15,800 m (9.818 mi)2013–2024
Water supplyPandaoling Tunnel, Datong River Diversion to Shaanxi Project Shaanxi, China15,723 m (9.770 mi)1994
MetroCopenhagen Metro: City Circle Line Denmark15,500 m (9.631 mi)2019Longest railway tunnel in Denmark and Scandinavia
MetroBudapest Metro: Line 3[73] Hungary15,500 m (9.631 mi)1976–1990Line 3 is actually 17.39 km long, but only 15.5 km of it is underground.
Railway Single TrackFurka Base Urner Alps, Switzerland15,442 m (9.595 mi)1982Single track with passing loops, metre gauge
Railway Twin TubeCeneri Base Tunnel Lepontine Alps, Switzerland15,400 m (9.569 mi)2020Part of the NRLA
MetroSeoul Subway: Line 3 (Gupabal–Geumho) Seoul, South Korea15,400 m (9.569 mi)1985
MetroTianjin Subway: Line 1 Tianjin, China15,378 m (9.555 mi)1976–2006
RailwayHaruna Tunnel Gunma Prefecture, Japan15,350 m (9.538 mi)1982Part of the Jōetsu Shinkansen
Railway Single TrackSeveromuysky Tunnel Severomuysky Range, Russia (construction started at the time of Soviet Union)15,343 m (9.534 mi)2003
WastewaterDeer Island Outfall Tunnel[74] Deer Island, Boston, Massachusetts, United States15,290 m (9.501 mi)200024 ft (7.3 m) diameter (42m2 cross section); discharges treated effluent into Atlantic Ocean
Railway Single TubeFirenzuola Bologna – Firenze, Italy15,285 m (9.498 mi)2009Bologna–Florence high-speed railway
HydroelectricInguri Hydroelectric Power Station Water Tunnel Georgia (at the time of construction Soviet Union)15,279 m (9.494 mi)1978
MetroShanghai Subway: Line 2 Shanghai, China15,274 m (9.491 mi)2000Between Zhanjianggaoke station and Lingkong Station
Water supplyJinquidi Tunnel, Niulan River Diversion to Dianchi Yunnan, China15,257 m (9.480 mi)2013
HydroelectricBaotan Hydroelectric Power Station Water Tunnel Guangxi, China15,200 m (9.445 mi)2010
RailwayGorigamine Tunnel[66] Nagano Prefecture, Japan15,175 m (9.429 mi)1997Part of the Hokuriku Shinkansen
HydroelectricXuecheng Hydroelectric Power Station Water Tunnel[75] Sichuan, China15,174 m (9.429 mi)2007
Railway Single TrackMonte Santomarco Paola – Cosenza, Italy15,040 m (9.345 mi)1987
Railway Single TubeGotthard Rail Tunnel Lepontine Alps, Switzerland15,003 m (9.322 mi)1882Longest transit tunnel until Simplon Tunnel was opened.
MetroGwangju Metro: Line 1 (Sotae station–Dosan station) Gwangju, South Korea15,000 m (9.321 mi)2004
RailwayNakayama Tunnel Gunma Prefecture, Japan14,857 m (9.232 mi)1982Part of the Jōetsu Shinkansen
Water supplyDangara Irrigation Tunnel[76] Nurek, Tajikistan (at the time of construction Soviet Union)14,800 m (9.196 mi)1987
RailwayCuajone-El Sargento Ilo-Toquepala / Cuajone Industrial Railroad – Southern Peru Copper Corporation, Peru14,724 m (9.149 mi)[77]1975
Railway Single TubeMount Macdonald Tunnel Rogers Pass, Glacier National Park, Canada14,723 m (9.148 mi)1989
Railway (Maglev)Misaka Sasago Tunnel Yamanashi, Japan14,613 m (9.080 mi)1996Part of the Chuo Shinkansen (Maglev). Already used as Yamanashi Test Track since 1996.
Railway Single TubeLötschberg Tunnel Bernese Alps, Switzerland14,612 m (9.079 mi)1913
Water supplyCaoe River Diversion Project Zhejiang, China14,600 m (9.072 mi)2011
Railway Single TubeRomerike Tunnel Oslo – Lillestrøm, Norway14,580 m (9.060 mi)1999
RailwayFajiushan Tunnel[78] Shanxi, China14,573 m (9.055 mi)2014Part of Shanxi–Henan–Shandong railway.
Water supplySnowy-Geehi Tunnel[43] New South Wales, Australia14,500 m (9.010 mi)1966Part of the 145 km tunnel network of the Snowy Mountains Scheme
MetroSeoul Subway: Line 4 (Isu–Beomgye) Seoul, Gwacheon and Anyang in South Korea14,500 m (9.010 mi)1980–1994
RoadZigana Tunnel Torul–Maçka, Turkey14,481 m (8.998 mi)[79]2023[80]Longest road tunnel in Turkey
HydroelectricJisha Hydroelectric Power Station Water Tunnel Yunnan, China14,467 m (8.989 mi)2007
Road Twin tubeRyfylke Tunnel Stavanger–Strand, Norway14,400 m (8.948 mi)2019Longest underwater road tunnel in the world
Water supply#6 Tunnel, Yellow River Diversion to Shanxi South Line Shanxi, China14,400 m (8.948 mi)2002See South–North Water Transfer Project
Water supplyAla Mountain Pass Water Supply Project Xinjiang, China14,346 m (8.914 mi)2010
Road Twin TubeOvit Tunnel[81] Erzurum Province–Rize Province, Turkey14,346 m (8.914 mi)2018
MetroStockholm Metro: Tunnelbana 3 (Blue Line) Kungsträdgården–Hjulsta Stockholm, Sweden14,300 m (8.886 mi)1975–1977
Railway Single TubeDayaoshan Tunnel[82] Nanling Mountains, China14,294 m (8.882 mi)1987
MetroIstanbul Metro (Line M8) Istanbul, Turkey14,270 m (8.867 mi)2023[83]
HydroelectricZaramag Hydroelectric Power Station Water Tunnel[84][85] Ardon River, North Ossetia, Russia14,226 m (8.840 mi)2015[86]
Water supplyTooma-Tumut Tunnel[43] New South Wales, Australia14,200 m (8.823 mi)1961Part of the 145 km tunnel network of the Snowy Mountains Scheme
MetroMetro Lisbon – Blue (Seagull) Line Lisbon, Portugal14,000 m (8.699 mi)1959–2007
MetroMTR – Island line (West of Heng Fa Chuen) Hong Kong, China (construction started at the time of British Hong Kong)14,000 m (8.699 mi)1985–2014
RoadArlberg Road Tunnel Arlberg, Austria13,972 m (8.682 mi)1978
Water supplyShanggongshan Tunnel, Zhangjiuhe Water Supply Project Yunnan, China13,941 m (8.663 mi)2007
HydroelectricDayingshan #4 Hydroelectric Power Station Water Tunnel Yunnan, China13,932 m (8.657 mi)20098.5 m in diameter (57m2 cross section)
RailwayHokuriku Tunnel Fukui Prefecture, Japan13,870 m (8.618 mi)1962Part of the Hokuriku Main Line
Railway Single TubeXiapu Tunnel Fujian, China13,838 m (8.599 mi)2009
Railway Twin TubeYesanguan Tunnel Hubei, China13,838 m (8.599 mi)2010Tube I: 13838 meters, tube II: 13796 meters
HydroelectricCentrala Hidroelectrică Lotru-Ciunget Ciungetu, Romania13,719 m (8.525 mi)19725 m in diameter
Railway Single TubeFréjus (Mont Cenis) Alps, France/Italy (construction started in the Kingdom of Sardinia)13,657 m (8.486 mi)1871Longest transit tunnel until Gotthard Tunnel was opened.
Road Twin TubeXishan Tunnel Shanxi, China13,654 m (8.484 mi)2012Left tube: 13654 meters, right tube: 13570 meters
Railway Single TubeNorth Tianshan Tunnel Xinjiang, China13,610 m (8.457 mi)2009
RailwayMarmaray Istanbul, Turkey13,600 m (8.451 mi)2013Built next to a fault zone, between two continents
Railway Single TrackSavio Rail Tunnel Helsinki – Kerava, Finland13,575 m (8.435 mi)2008
MetroBusan Metro: Line 3 (Suyeong–Deokcheon) Busan, South Korea13,500 m (8.389 mi)2005
Railway Twin TubeShin Shimizu Tunnel[66] Mount Tanigawa, Japan13,500 m (8.389 mi)1967Part of the Jōetsu Line
RoadMount Erlang Tunnel Sichuan, China13,433 m (8.347 mi)2018Erlangshan extra-long tunnel part of Yakang Expressway
Railway Single TrackHex River Tunnel[87] Hex River Pass, South Africa13,400 m (8.326 mi)1989
RailwayWonhyo Tunnel[88][89] Ulsan, South Korea13,270 m (8.246 mi)2010Gyeongbu high-speed railway
Railway Single TubeDabieshan Tunnel Hubei, China13,256 m (8.237 mi)2008
RailwaySchlern Tunnel[90] South Tyrol, Italy13,159 m (8.177 mi)1993
Railway Single TubeCaponero-Capoverde Genova – Ventimiglia, Italy13,135 m (8.162 mi)2001Includes an underground station ("San Remo")
Road Twin TubeHongtiguan Tunnel Shanxi, China13,122 m (8.154 mi)2013Left tube: 13122 meters, right tube: 13098 meters
MetroBarcelona Metro line 2 Barcelona, Spain13,100 m (8.140 mi)1985–1997
RailwayAki Tunnel Hiroshima Prefecture, Japan13,030 m (8.096 mi)1975Part of the San'yō Shinkansen
Many more tunnels exist that are shorter than 13,000 metres (8 mi)

World's longest tunnels (under construction)

edit
TypeNameLocationLengthYearComment
Water SupplyKashuang Water Tunnel Xinjiang, China280,000 m (173.984 mi)(??)Water transfer from the snow melt of Altai Mountains to the arid region of Xinjiang[91]
Water SupplyNew York City Water Tunnel No. 3 New York State, United States96,560 m (60.000 mi)2026[92]More water supply for New York City. Partially in use.
MetroParis Métro Line 15 Paris/Île-de-France, France75,000 m (46.603 mi)2025–2030Circular line; will form the longest subway tunnel.
Railway Twin TubeMont d'Ambin Base Tunnel Cottian Alps, France/Italy57,500 m (35.729 mi)2032[93]Part of the Lyon–Turin high-speed railway. Reconnaissance tunnels under construction since 2002; construction of main tunnel started in 2016.[94]
Railway Twin TubeBrenner Base Tunnel Stubai Alps, Austria/Italy55,000 m (34.175 mi)2032[95]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.[96][97]
MetroThomson–East Coast Line MRT, Singapore43,000 m (26.719 mi)2024Excluding planned extension
RailwayYigong tunnel Tibet, China42,500 m (26.408 mi)[98]2030Part of the Sichuan–Tibet railway. Construction started in November 2020.[99]
MetroAthens Metro Line 4 Athens, Greece38,200 m (23.736 mi)[100]2029Construction of 1st phase started in June 2021,[101] total length may be changed.
RailwaySejila tunnel Tibet, China37,900 m (23.550 mi)[102]2030Part of the Sichuan–Tibet railway. Construction started in November 2020.[103][non-primary source needed]
Railway (Maglev)Daiichi Shutoken Tunnel[citation needed] Tokyo, Japan36,924 m (22.944 mi)[citation needed]After 2027Part of the Chuo Shinkansen (Maglev)
Mineral transportationWoodsmith Mine Tunnel Potash Project Mineral Transport System (MTS) North York Moors, United Kingdom36,700 m (22.804 mi)[104](??)[105]6 m in diameter[106] incorporating conveyor and maintenance access. Start of construction was planned for 2016, but actually started in April 2019.[107][108]
RailwayGaoligongshan Tunnel Yunnan, China34,538 m (21.461 mi)2025[109]Railway between Dali and Ruili. Construction started in August 2017.[110]
Railway (Maglev)Daiichi Chukyoken Tunnel[citation needed] Nagoya, Japan34,210 m (21.257 mi)[citation needed]After 2027Part of the Chuo Shinkansen (Maglev)
MetroL9 Barcelona, Spain33,000 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 Twin TubeKoralm Tunnel Koralpe, Austria32,900 m (20.443 mi)2026[111]Part of the Koralm Railway; boring of main tunnel started at the west portal in May 2010.[112]
RailwayOshima Tunnel Hokkaido, Japan32,675 m (20.303 mi)2031Part of the Hokkaido Shinkansen.
MetroCross Island Line MRT, Singapore29,000 m (18 mi)[113] (Phase 1 only)2030 (Phase 1)
2032 (Phase 2)		Construction of Phase 1 started in January 2023[114]
Water SupplyNCP Canal Main Tunnel Anuradhapura East, Sri Lanka27,800 m (17.274 mi)2025Part 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.[115]
Railway Twin TubeValico Tunnel Ligurian Apennines, Italy27,342 m (16.990 mi)[116]2026Breakthrough in September 2020.[117] Part of the Tortona–Genoa high-speed railway.
Railway Twin TubeSemmering Base Tunnel Lower Austria/Styria, Austria27,300 m (16.963 mi)2030[118]Construction of the first contract section started in January 2014.[119] Will cut travel time between Vienna and Graz by 30 minutes and is part of the Baltic–Adriatic Corridor
RoadRogfast tunnel Randaberg–Bokn, Norway26,700 m (16.591 mi)2033[120]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.[121] Will be the longest road tunnel in the world, and also the deepest undersea tunnel, 392 metres (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.
RailwaySasson Tunnel[citation needed] Hokkaido, Japan26,230 m (16.299 mi)[citation needed]2031Part of the Hokkaido Shinkansen.
MetroSuburban Rail Loop East Melbourne, Victoria, Australia26,000 m (16 mi)[a]2035[122]Construction started in June 2022.[123] SRL North is still under early planning, projected to be completed by 2053.
Water SupplyMae Taeng–Mae Ngat Tunnel[124] Chiang Mai, Thailand25,624 m (15.922 mi)(??)[125]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] Akaishi Mountains, Japan25,019 m (15.546 mi)[citation needed]After 2027Part of the Chuo Shinkansen (Maglev)
Railway (Maglev)Chuo Alps Tunnel[citation needed] Kiso Mountains, Japan23,288 m (14.470 mi)[citation needed]After 2027Part of the Chuo Shinkansen (Maglev)
MetroMetro Manila Subway Metro Manila, Philippines23,160 m (14.391 mi)2028Only for the dedicated mainline between East Valenzuela and FTI.[126] To be partially opened in 2025.[127]
Road Twin TubeSengli Daban Tunnel Xinjiang, China22,035 m (13.692 mi)2026[128]Construction started in 2020. It bypasses Sengli Daban mountain pass which sits up at 4091 meters above the sea level. Once completed, it will become the longest road tunnel in the world at an altitude of over 4000m.
RailwayThane Creek Tunnel[129] Mumbai, India21,150 m (13.142 mi)[130]2028[131]Part of the Mumbai–Ahmedabad high speed railway, construction started in November 2023,[132] 13 m diameter.[133]
Railway Twin tubeAlia Tunnel[134] Sicily, Italy19,900 m (12.365 mi)[135]2030[136]Part of the Palermo–Catania high-speed railway
Railway Twin tubeBentong Tunnel (Genting Tunnel) Bentong, Pahang, Malaysia18,000 m (11.185 mi)2027Part of MRL East Coast Rail Link project. Will became the longest tunnel in South East Asia[137]
RailwayShiribeshi Tunnel[citation needed] Hokkaido, Japan17,975 m (11.169 mi)[citation needed]2031Part of the Hokkaido Shinkansen.
Road and railwayFehmarn Belt Fixed Link Fehmarn Belt, Germany/Denmark17,600 m (10.936 mi)2029[138]Construction started in January 2021[139]
RailwayTateiwa Tunnel[citation needed] Hokkaido, Japan16,980 m (10.551 mi)[citation needed]2031Part of the Hokkaido Shinkansen.
RoadFörbifart Stockholm[140] Stockholm, Sweden16,500 m (10.253 mi)2030[141]Construction started in August 2014
RoadTokyo Gaikan Tunnel[citation needed] Tokyo, Japan16,200 m (10.066 mi)[citation needed]2030[citation needed]Part of the C3 Tokyo Gaikan Expressway.
RailwayZhoushan underwater tunnel Zhejiang, China16,200 m (10.066 mi)[142]2026[142]Part of the Ningbo–Zhoushan railway. Construction started in December 2020.[143]
Railway Twin TubeChiltern tunnel Chiltern Hills, United Kingdom16,040 m (9.967 mi)2029-2033[144]Part of High Speed 2,[145] construction started in May 2021,[146] 9.1 m internal diameter[147]
RailwayUchiura Tunnel[citation needed] Hokkaido, Japan15,560 m (9.669 mi)[citation needed]2031Part of the Hokkaido Shinkansen.
Railway (Maglev)Ina Sanchi Tunnel[citation needed] Nagano, Japan15,300 m (9.507 mi)[citation needed]After 2027Part of the Chuo Shinkansen (Maglev)
RailwayDevprayag Rail Tunnel[citation needed] Uttarakhand, India15,270 m (9.488 mi) [citation needed]2024–2025[citation needed]Part of Rishikesh–Karnaprayag line[148]
Railway (Maglev)Hiyoshi Tunnel[citation needed] Gifu, Japan14,532 m (9.030 mi)[citation needed]After 2027Part of the Chuo Shinkansen (Maglev)
RoadZoji-la Tunnel Zoji La Pass, India14,200 m (8.823 mi)[149]2026Construction started in October 2020[150]
RailwayPatalpani Rail Tunnel[citation needed] Madhya Pradesh, India14,000 m (8.699 mi)[citation needed]2025[citation needed]
MetroMRT Orange Line[151] Bangkok, Thailand13,770 m (8.556 mi)2025Orange Line Phase 1
Railway Twin TubeNortholt tunnel West London, United Kingdom13,500 m (8.389 mi)2029-2033[144]Part of High Speed 2, construction started in October 2022.[152]
Metroİzmir Metro Line M2 İzmir, Turkey13,500 m (8.389 mi)[153]2026
MetroIstanbul Metro (Line M12) Istanbul, Turkey13,030 m (8.096 mi)2025

World's longest tunnels (advanced planning stage)

edit
TypeNameLocationLengthYearComment
Water supplyTibet Xinjiang Tunnel Tibet/Xinjiang, China1,000,000 m (621.4 mi)???China preparing world's longest tunnel to divert Tibet river to desert[154]
RailwayBohai Strait tunnel Bohai Strait, China123,000 m (76.4 mi)???Tunnel between Dalian on the Liaodong Peninsula and Yantai on the Shandong Peninsula.
RailwayTalsinki

Helsinki/Tallinn, Finland/Estonia

100,000 m (62.1 mi)After 2030Awaiting financing
Water supplyQinling Tunnel, Han River Diversion to Wei River[citation needed] Shaanxi, China98,300 m (61.1 mi)[citation needed]???
RailwaySerra do Mar Tunnel[155] Brazil, between São Paulo and Santos30,000 m (18.6 mi)???
RoadSuðuroyartunnilin Faroe Islands, linking Suðuroy island to Sandoy island26,000 m (16.2 mi)After 2030Feasibility study
Railway Twin TubeTachlovice Tunnel Prague/Beroun, Czech Republic24,700 m (15.3 mi)[156]After 2035Project is on hold
Metroİzmir Metro Line M3 İzmir, Turkey22,300 m (13.857 mi)2020s
MetroIstanbul Metro (Line M13) Istanbul, Turkey21,900 m (13.6 mi)2020s
Railway and electricityGrimsel Tunnel Grimsel Pass, Switzerland21,720 m (13.5 mi)[157]2025/2026Feasibility study
Railway Twin tubePacheco Pass Tunnels Pacheco Pass, California, United States21,000 m (13.0 mi)2031To be built as part of the California High-Speed Rail project
Road Twin tubeGohpur – Numaligarh Tunnel Assam, India15,600 m (9.693 mi)[158]???Tunnel under the Brahmaputra River
Road Twin tubeKresna Gorge Tunnel[159] Kresna, Bulgaria15,400 m (9.6 mi)CancelledPart of Struma motorway, connecting Sofia and Athens.
Road Twin tubeAgua Negra Tunnel Agua Negra Pass, Argentina/Chile14,000 m (8.7 mi)???Awaiting ratification by Chile[citation needed]

World's longest tunnels (abandoned)

edit
TypeNameLocationLengthYearComment
Water supplyGadara AqueductRoman Empire94,000 m (58.4 mi)129–Water supply for the Decapolis in present-day Jordan

World's longest tunnels (proposed)

edit

See also

edit
Wikimedia Commons has media related to Tunnel.

Notes

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

References

edit
  1. ^ "Dahuofang Water Tunnel | The Robbins Company". Robbinstbm.com. Archived from the original on 22 March 2012. Retrieved 1 February 2016.
  2. ^ "Tras 11 años de construcción, inauguran el Túnel Emisor Oriente". 23 December 2019. Archived from the original on 21 January 2022. Retrieved 22 January 2022.
  3. ^ "Не 70 км, а 57,5! Как московские власти «удлинили» Большую кольцевую линию метро". 22 March 2023. Archived from the original on 27 March 2023. Retrieved 25 July 2023.
  4. ^ "IMG 20230327 063939 969 — Postimages". Archived from the original on 27 March 2023. Retrieved 25 July 2023.
  5. ^ First stretch opens in 1969 as part of line 2
  6. ^ "Project data – raw construction Gotthard Base Tunnel" (PDF). Lucerne, Switzerland: AlpTransit Gotthard Ltd. 1 June 2016. Archived (PDF) from the original on 11 March 2016. Retrieved 15 December 2016.
  7. ^ "Wer hat die grösste Röhre?" [Who has the longest tube?]. Tages-Anzeiger (graphical animation) (in German). Zurich, Switzerland. 14 April 2016. Archived from the original on 29 April 2016. Retrieved 11 May 2016.
  8. ^ Mug, Vladislav; Konvicka, Vladislav (2009). "Štolový vodovodní přivaděč z vodní nádrže Želivka do Prahy" [Underground World: Stola Water Delivery Conduit from the Water Tank Želivka to Prague] (in Czech). Archived from the original on 17 August 2014. Retrieved 27 February 2010.
  9. ^ Wagenbreth, Otfried (2002). "125 Jahre Rothschönberger Stolln" (in German). Archived from the original on 4 April 2023. Retrieved 26 December 2022.
  10. ^ "Korea completes record setting rail excavation". Tunneltalk.com. Retrieved 16 June 2019.
  11. ^ "- Official Korea Tourism Organization". english.visitkorea.or.kr. Archived from the original on 18 April 2022. Retrieved 16 June 2019.
  12. ^ "Гидроспецпроект/Arpa-Sevan connecting tunnel". gidrospetsproekt.ru. Archived from the original on 6 November 2020. Retrieved 16 June 2019.
  13. ^ "1961-1981 the Complex of Hydraulic Works for Transfer of the Arpa and Yeghegis | Arpa Sevan". Archived from the original on 22 November 2021. Retrieved 21 January 2022.
  14. ^ "1968-1980 Construction of Tunnel No.2 and of Arpa-Sevan Conduit | Arpa Sevan". Archived from the original on 28 March 2022. Retrieved 21 January 2022.
  15. ^ "This Week In Armenian History: Inauguration of the Arpa-Sevan Tunnel (March 21, 1981)". Thisweekinarmenianhistory.blogspot.com. 21 March 2016. Archived from the original on 13 April 2019. Retrieved 16 June 2019.
  16. ^ "Pahang Selangor Raw Water Tunnel | The Robbins Company". Therobbinscompany.com. Archived from the original on 1 July 2016. Retrieved 30 May 2016.
  17. ^ "Laman Web Rasmi Kementerian Tenaga, Teknologi Hijau dan Air". Kettha.gov.my. Archived from the original on 24 July 2018. Retrieved 30 May 2016.
  18. ^ "Downtown Line 3 officially opens; Khaw Boon Wan announces review of fares incurred when switching between stations | the Straits Times". The Straits Times. 20 October 2017. Archived from the original on 3 July 2019. Retrieved 1 February 2022.
  19. ^ "Stages | Land Transport Authority". lta.gov.sg. Archived from the original on 3 July 2014. Retrieved 5 February 2022.
  20. ^ Wahlstrom, Ernest E (1974). "History of Geologic Investigations, Engineering Design, and Construction Methods of the Harold D. Roberts Tunnel, Colorado" (PDF). Archived (PDF) from the original on 24 October 2020. Retrieved 30 October 2020.
  21. ^ "莞惠城际最快明年启用 松山湖隧道长38公里_新浪东莞". Sina Corp. Archived from the original on 20 January 2016. Retrieved 1 February 2016.
  22. ^ "世界最长高原铁路隧道——新关角隧道贯通". Xinhua News Agency. Archived from the original on 19 April 2014. Retrieved 1 February 2016.
  23. ^ "Breakthrough on the Gerede Water Transmission Tunnel - Tunnels & Tunnelling International". tunnelsonline.info. Archived from the original on 1 February 2022. Retrieved 1 February 2022.
  24. ^ "Gerede Water Transmission Tunnel". Robbins. Archived from the original on 1 February 2022. Retrieved 1 February 2022.
  25. ^ "Milwaukee Deep Tunnels". MMSD.com. 13 August 2020. Archived from the original on 6 June 2021. Retrieved 6 June 2021.
  26. ^ "EVINOS-MORNOS TUNNEL – GREECE" (PDF). Selitunnel.com. Archived (PDF) from the original on 13 May 2019. Retrieved 1 February 2016.
  27. ^ "Evinos-Mornos Tunnel – Greece Construction of a 30 km Long Hydraulic Tunnel in Less Than Three Years Under the Most Adverse Geological Conditions – Document Summary". new.onemine.org. Archived from the original on 13 December 2013.
  28. ^ Massachusetts Water Resources Authority (December 2006). "Water System Master Plan" (PDF). pp. 7–26. Archived (PDF) from the original on 4 March 2016. Retrieved 7 July 2013.
  29. ^ "Guadarrama Tunnel". Structurae. Archived from the original on 5 October 2013. Retrieved 1 February 2016.
  30. ^ Massachusetts Water Resources Authority (December 2006). "Water System Master Plan" (PDF). pp. 7–25. Archived (PDF) from the original on 4 March 2016. Retrieved 7 July 2013.
  31. ^ "Awards". tunnelintelligence.com. Archived from the original on 8 February 2012.
  32. ^ "Water from Melamchi finally arrives in Kathmandu". kathmandupost.com. Archived from the original on 2 February 2022. Retrieved 21 April 2021.
  33. ^ "The LHC, Facts and figures". CERN. 2008. Archived from the original on 16 July 2009. Retrieved 2 July 2009.
  34. ^ "Şanlıurfa Sulama Tünelleri ve Tesisleri İnşaatı" (in Turkish). Eren İnşaatı. Archived from the original on 10 July 2011. Retrieved 1 October 2010.
  35. ^ "Collapse of headrace tunnel after grand opening". Tunnel Talk. February 2010. Archived from the original on 20 September 2012. Retrieved 27 September 2010.
  36. ^ "Ethiopia's Gilgel Gibe II hydropower plant resumes operation". nazret.com. Archived from the original on 6 October 2017. Retrieved 16 June 2019.
  37. ^ a b "Urban Rail Transport SA :METRO Line 1". Amel.gr. Archived from the original on 19 May 2012. Retrieved 1 February 2016.
  38. ^ 원주~제천 중앙선 복선전철 2011년 6월 착공 (in Korean). Yahoo!. 9 September 2010. Archived from the original on 26 May 2024. Retrieved 19 October 2010.
  39. ^ "Feasibility study and basic plan of Jungang Line for double track between Wonju and Jecheon". Chunsuk Engineering. Archived from the original on 22 July 2011. Retrieved 19 October 2010.
  40. ^ "Korea unveils new low-carbon bullet train". 4 January 2021.
  41. ^ "Gurgaon Metro set for operationalisation next week". News.webindia123.com. Archived from the original on 30 November 2019. Retrieved 1 February 2016.
  42. ^ "GovHK: Harbour Area Treatment Scheme". Government of Hong Kong. 25 November 2015. Archived from the original on 30 December 2015. Retrieved 1 February 2016.
  43. ^ a b c d e "Snowy! Power of a nation". Powerhousemuseum.com. Archived from the original on 3 March 2016. Retrieved 1 February 2016.
  44. ^ Spooner, William (8 July 1959), Eucumbene-tumut tunnel ready for service ahead of schedule, archived from the original on 15 May 2023, retrieved 16 June 2019
  45. ^ "Archived copy". Archived from the original on 21 July 2013. Retrieved 23 March 2014.{{cite web}}: CS1 maint: archived copy as title (link)
  46. ^ "瓦日铁路（山西中南部铁路通道）30日建成通车_新华网山东频道". Xinhua News Agency. 30 December 2014. Archived from the original on 4 March 2016. Retrieved 1 February 2016.
  47. ^ "Iiyama Tunnel". Structurae. Archived from the original on 14 May 2012. Retrieved 1 February 2016.
  48. ^ "Korea opens Olympic high-speed line". Railjournal.com. 22 December 2017. Archived from the original on 16 June 2019. Retrieved 16 June 2019.
  49. ^ "1995-2003 "Complex of Hydraulic Structures for Diversion of the Vorotan River Runoff to the Basin of the Arpa River" | Arpa Sevan". Archived from the original on 29 November 2018. Retrieved 21 January 2022.
  50. ^ 경부고속철도 금정터널 개요 (in Korean). Civil Engineering. 6 July 2009. Archived from the original on 11 March 2012. Retrieved 28 August 2010.
  51. ^ "Olmos Trans-Andean Tunnel". The Robbins Company. 20 December 2011. Retrieved 1 February 2016.
  52. ^ "ABB starts to make 'The London Connection'". ABB Group. 14 August 2004. Archived from the original on 5 March 2012. Retrieved 8 February 2009. a 20 km long three-metre diameter tunnel
  53. ^ "£200M London Connection Project is Commissioned" (PDF). National Grid plc. September 2005. Archived from the original (PDF) on 17 February 2010. Retrieved 8 February 2009. This 20 km long tunnel contains one of the longest 400 kV XLPE cable circuits to be installed in Europe.
  54. ^ https://tractebel-engie.com/en/references/mantaro-hydroelectric-complex-modernisation
  55. ^ "Follobanen – Bane NOR". Archived from the original on 25 July 2021. Retrieved 14 October 2020.
  56. ^ "Kong Harald åpnet Follobanen". 12 December 2022. Archived from the original on 4 October 2023. Retrieved 4 July 2023.
  57. ^ Samferdselsdepartementet (20 June 2014). "Follobanen – Nordens lengste jernbanetunnel: Samferdselsministeren fyrte av første salve". Regjeringen.no. Archived from the original on 20 December 2016. Retrieved 16 June 2019.
  58. ^ "Futang, China". 7 December 2021. Archived from the original on 15 August 2022. Retrieved 21 January 2022.
  59. ^ "Chinese, Uzbek leaders hail inauguration of Central Asia's longest railway tunnel – Xinhua | English.news.cn". Xinhua News Agency. Archived from the original on 23 June 2016. Retrieved 15 January 2022.
  60. ^ "Project Profile for Harbour Area Treatment Scheme (HATS) Stage 2A" (PDF). Government of Hong Kong. Archived (PDF) from the original on 3 January 2016. Retrieved 1 February 2016.
  61. ^ "Shiziping, China". 16 December 2021. Archived from the original on 15 August 2022. Retrieved 21 January 2022.
  62. ^ Zhenglu, Zhang; Zhentao, Yang; Shaquan, Xu; Xiangduo, Zhang (2000). "Precise leveling of the very long Qinling mountain tunnel". Geo-spatial Information Science. 3 (1): 57–61. Bibcode:2000GSIS....3...57Z. doi:10.1007/BF02826808.
  63. ^ "中铁十八局集团中南部铁路通道太行山隧道建设纪实". Cr18g.com. 18 June 2012. Archived from the original on 20 January 2016. Retrieved 1 February 2016.
  64. ^ The Shuakhevi hydropower plant project, Georgia Archived 28 July 2014 at the Wayback Machine
  65. ^ "Bağbaşı Barajı ve Mavi Tünel'i İnşaatı – Konya". Mavitunel.com. Archived from the original on 29 January 2016. Retrieved 1 February 2016.
  66. ^ a b c "New Tunneling Technology in Japan / Statistical Data". Japan-tunnel.org. Archived from the original on 15 January 2016. Retrieved 1 February 2016.
  67. ^ 대우건설 솔안터널 관통식 (in Korean). Asia Economy. 7 December 2006. Archived from the original on 23 July 2012. Retrieved 6 October 2008.
  68. ^ "Plan view of Kemano T1 and T2 tunnels (Morgenroth, 2016). | Download Scientific Diagram". Archived from the original on 28 March 2023. Retrieved 28 March 2023.
  69. ^ "Rio Tinto completes Kemano hydropower project". riotinto.com. Archived from the original on 28 March 2023. Retrieved 28 March 2023.
  70. ^ "Climax Molybdenum – A Freeport-McMoRan Company". climaxmolybdenum.com. Archived from the original on 30 June 2014.
  71. ^ "Longest Railroad Tunnels". robl.w1.com. Archived from the original on 26 May 2012.
  72. ^ "Transport Writer". Transportwriter.com. Archived from the original on 4 March 2016. Retrieved 1 February 2016.
  73. ^ "3-as metróvonal jellemzői". Metros.hu (in Hungarian). Archived from the original on 10 February 2024. Retrieved 27 March 2016.
  74. ^ Massachusetts Water Resources Authority (December 2006). "Wastewater Master Plan" (PDF). pp. 3–5, 3–9. Archived (PDF) from the original on 8 August 2012. Retrieved 7 July 2013.
  75. ^ http://cdm.unfccc.int/filestorage/z/4/R0BX9WPCSNKHQVUTI37E24A8YOZM16.pdf/Sichuan%20Xuecheng%20Hydropower%20Project%28clear%20version%29%20.pdf?t=Mnh8bnQ1N2NofDDMMDpZU98Wvug0iq9fFgy2 [dead link]
  76. ^ "Р"идроспецпроекС'/Dangarinsky Hydrotechnical tunnel in Tajikistan". Gidrospetsproekt.ru. Archived from the original on 1 July 2015. Retrieved 1 February 2016.
  77. ^ "RailPictures.Net Photo: SPCC 41 Southern Peru Copper Corporation GE U23B at Toquepala, Peru by Jean-Marc Frybourg". Railpictures.net. Archived from the original on 8 October 2018. Retrieved 1 February 2016.
  78. ^ 李连明 谢崇志 王瑞晨 (19 September 2013). "山西中南部铁路通道发鸠山隧道贯通". 中国网. Archived from the original on 10 May 2019. Retrieved 26 December 2022.
  79. ^ "Yeni Zigana Tüneli İnşaatı Devam Ediyor". Haberler.com. 17 August 2016. Archived from the original on 16 June 2019. Retrieved 16 June 2019.
  80. ^ "Cumhurbaşkanı Erdoğan'dan 'Teşekkürler Rize' paylaşımı". 3 May 2023. Archived from the original on 3 May 2023. Retrieved 4 July 2023.
  81. ^ Kaçar, Muhammet (13 May 2012). "Başbakan Ovit Dağı Tüneli'nin temelini attı". Hürriyet Daily News (in Turkish). Archived from the original on 16 May 2012. Retrieved 13 May 2012.
  82. ^ "2010 – Activity Report – ITA-AITES". Ita-aites.org. Archived from the original on 19 June 2008. Retrieved 1 February 2016.
  83. ^ "M8 Bostancı-Dudullu Metro Hattı'nın açılışı yapıldı (Yeni metro hattının durakları ve güzergahı)". Archived from the original on 21 January 2023. Retrieved 4 July 2023.
  84. ^ "Гидроузел на р. Ардон". Lhp.rushydro.ru. Archived from the original on 14 August 2012. Retrieved 1 February 2016.
  85. ^ "Общие сведения". Zaramag.rushydro.ru. Archived from the original on 20 May 2013. Retrieved 1 February 2016.
  86. ^ "Зарамагский тоннель – Блог РусГидро". Blog.rushydro.ru. Archived from the original on 15 February 2016. Retrieved 16 June 2019.
  87. ^ "Britannica Online Encyclopedia". Encyclopædia Britannica. Archived from the original on 25 February 2008.
  88. ^ "Measurement of compressive and tensile strain in the railway structures with FBG sensor packages" (PDF). lib.semi.ac.cn:8080. Archived from the original (PDF) on 2 March 2012.
  89. ^ ita-aites.org https://web.archive.org/web/20090109051907/http://www.ita-aites.org/cms/fileadmin/filemounts/general/pdf/ItaAssociation/ProductAndPublication/OpenSession/OS_2006_4SKE-C.pdf. Archived from the original (PDF) on 9 January 2009. {{cite web}}: Missing or empty |title= (help)
  90. ^ "BBT SE". bbt-se.com. Archived from the original on 10 September 2011.
  91. ^ "Chinese engineers digging giant desert tunnel never saw this coming". South China Morning Post. 18 December 2021. Archived from the original on 21 December 2021. Retrieved 21 December 2021.
  92. ^ "NYC's Giant Water Tunnel Begins Work on Final Shafts, Following 50 Years of Construction". 22 April 2021. Archived from the original on 22 January 2022. Retrieved 22 January 2022.
  93. ^ "France / Italie. Lyon-Turin : Les marchés du tunnel de base attribués". Archived from the original on 9 March 2022. Retrieved 22 January 2022.
  94. ^ "TELT Lyon Turin • Chronology of works". Archived from the original on 17 October 2020. Retrieved 17 October 2020.
  95. ^ "Inbetriebnahme des Brennerbasistunnels voraussichtlich erst 2032". 21 May 2021. Archived from the original on 6 April 2023. Retrieved 25 July 2023.
  96. ^ "Did you know …". BBT-SE.com. Archived from the original on 2 February 2016. Retrieved 1 February 2016.
  97. ^ "BBT: Start of Works on the main Tunnel – tunnel". Archived from the original on 31 October 2020. Retrieved 7 December 2019.
  98. ^ "川藏铁路雅安至林芝段建设获批，总投资3198亿元共26站_财经上下游_澎湃新闻-The Paper". thepaper.cn. Archived from the original on 20 February 2021. Retrieved 17 November 2023.
  99. ^ 孙汝. "Sichuan-Tibet Railway 'extremely challenging' project, expert says". China Daily. Archived from the original on 16 October 2021. Retrieved 16 October 2021.
  100. ^ "ΚΑΤΑΣΚΕΥΗ ΤΗΣ ΝΕΑΣ ΓΡΑΜΜΗΣ 4 ΤΟΥ ΜΕΤΡΟ ΤΗΣ ΑΘΗΝΑΣ ΤΜΗΜΑ Α' «ΑΛΣΟΣ ΒΕΪΚΟΥ – ΓΟΥΔΗ» ΔΙΑΔΙΚΑΣΙΑ ΔΟΜΟΣΤΑΤΙΚΗΣ ΚΑΤΑΓΡΑΦΗΣ ΤΩΝ ΚΤΗΡΙΩΝ - ΚΑΤΑΣΚΕΥΩΝ ΣΤΗ ΖΩΝΗ ΕΠΙΡΡΟΗΣ ΤΟΥ ΕΡΓΟY" (PDF). 5 May 2023. Archived from the original (PDF) on 21 September 2022.
  101. ^ "Μετρό-Γραμμή 4: Ξεκινούν τα έργα - Οι 15 σταθμοί από Γαλάτσι έως Γουδί - Έτοιμο σε 8 χρόνια". naftemporiki.gr (in Greek). 22 June 2021. Archived from the original on 20 May 2022. Retrieved 20 May 2022.
  102. ^ Fu, Helin; Li, Jie; Li, Guoliang; Chen, Jingjun; An, Pengtao (1 June 2023). "Determination of In Situ Stress by Inversion in a Superlong Tunnel Site Based on the Variation Law of Stress — A Case Study". KSCE Journal of Civil Engineering. 27 (6): 2637–2653. doi:10.1007/s12205-023-0415-3. ISSN 1976-3808. S2CID 258273345. Archived from the original on 22 February 2024. Retrieved 17 November 2023.
  103. ^ "Construction of the Ya'an-Nyingchi section of the Sichuan-Tibet Railway started--Seetao". Archived from the original on 22 February 2024. Retrieved 27 August 2023 – via Facebook.
  104. ^ "North York Moors potash mine gets £1.7bn go-ahead". The Guardian. 30 June 2015. Archived from the original on 15 March 2017. Retrieved 1 February 2016.
  105. ^ Kajastie, Nia (13 December 2022). "Woodsmith tunnel and shafts making 'great progress' following reconfiguration". Ground Engineering (GE). Archived from the original on 30 October 2023. Retrieved 24 October 2023.
  106. ^ "Balfour and McAlpine chase £1.7bn York Potash job". Constructionenquirer.com. Archived from the original on 23 September 2015. Retrieved 1 February 2016.
  107. ^ "York Potash: Construction 'could start this year' and what else you need to know". Gazettelive.co.uk. July 2015. Archived from the original on 24 September 2015. Retrieved 1 February 2016.
  108. ^ Whipple, Tom (13 April 2019). "Colossal bore gets priest's blessing to dig a giant tunnel at Yorkshire Mine". The Times. No. 72820. p. 22. ISSN 0140-0460.
  109. ^ "Gaoligongshan Tunnel on Dali-Ruili Railway, The Longest Mountain Railway Tunnel in Asia" (PDF). Archived (PDF) from the original on 25 July 2023.
  110. ^ "我国铁路第一长隧高黎贡山隧道进入全面施工阶段" [Gaoligongshan, the longest Tunnel of China, entering the comprehensive construction phase]. Gov.cn. Xinhua News Agency. 28 August 2017. Archived from the original on 3 September 2017. Retrieved 3 September 2017.
  111. ^ "Eröffnung der Koralmbahn verzögert sich bis 2026". 23 March 2018. Archived from the original on 10 April 2019. Retrieved 14 October 2020.
  112. ^ "ÖBB-Infrastruktur AG". oebb.at. Archived from the original on 30 November 2012.
  113. ^ "First phase of Cross Island MRT line finalised; will have 12 stations". The Straits Times. 25 January 2019. Archived from the original on 25 January 2019. Retrieved 12 June 2019.
  114. ^ "LTA | Construction Commences on the Cross Island Line". Archived from the original on 19 January 2023. Retrieved 25 July 2023.
  115. ^ "About NCPCP". Mahaweli Water Security Investment Program. 1 November 2021. Archived from the original on 19 November 2021. Retrieved 11 November 2021.
  116. ^ "Valico Tunnel (Alessandria/Genova, 2021)". Archived from the original on 25 July 2023. Retrieved 25 July 2023.
  117. ^ "Genoa-Milan high-speed railway marks double tunnel breakthrough". 28 September 2020. Archived from the original on 25 July 2023. Retrieved 25 July 2023.
  118. ^ "Geologische Störzone führt zu späterer Fertigstellung des Semmering-Basistunnels". Archived from the original on 28 January 2023. Retrieved 25 July 2023.
  119. ^ "ÖBB Infrastruktur AG: 2014_01_10_Semmering-Basistunnel neu – Baustart des ersten Tunnelbauloses". oebb.at. Archived from the original on 23 February 2014. Retrieved 2 February 2022.
  120. ^ "(+) Slik skal Rogfast ferdigstilles til planlagt tid". 18 March 2022. Archived from the original on 23 September 2023. Retrieved 19 February 2024.
  121. ^ Akhtar, Syed Ali Shahbaz; Oftedahl, Cathrine; Morsund, Gunnar (20 November 2020). "Regjeringen klar for å gå videre med Rogfast" [The Government is Ready to Move Forward with Rogfast] (in Norwegian). NRK. Archived from the original on 24 August 2021. Retrieved 27 December 2020.
  122. ^ "SRL East". Victoria's Big Build. 11 May 2022. Archived from the original on 27 February 2023. Retrieved 15 May 2022.
  123. ^ "Works Start Today on Victoria's Suburban Rail Loop | Premier of Victoria". premier.vic.gov.au. Archived from the original on 1 June 2022. Retrieved 2 June 2022.
  124. ^ CityNews (30 June 2016). "5 Year Project to Bring More Water To Chiang Mai Through New Water Tunnels". Chiangmaicitylife.com. Archived from the original on 3 October 2016. Retrieved 12 July 2012.
  125. ^ "Protests greet PM in Chiang Mai, over 2,000 police provide protection". thaipbsworld.com. Archived from the original on 30 October 2023. Retrieved 24 October 2023.
  126. ^ Ranada, Pia (18 April 2017). "Duterte, Abe may sign Mega Manila subway deal in November". Rappler. Archived from the original on 19 April 2017. Retrieved 19 April 2017.
  127. ^ Mercurio, Richmond (19 April 2022). "Metro Manila subway partial opening moved to 2025 – DOTr". The Philippine Star. Manila. Archived from the original on 19 April 2022. Retrieved 19 April 2022.
  128. ^ "Tianshan Shengli tunnel under construction in Xinjiang – China News – SINA English". Archived from the original on 22 January 2022. Retrieved 22 January 2022.
  129. ^ "NHSRCL opens tender for 21-km tunnel between BKC and Thane". 10 February 2023. Archived from the original on 19 February 2024. Retrieved 19 February 2024.
  130. ^ "Mumbai-Ahmedabad Bullet Train: Afcons Begins Piling Work for Shaft-2". 12 November 2023. Archived from the original on 19 February 2024. Retrieved 19 February 2024.
  131. ^ "Herrenknecht to Supply Mumbai-Ahmedabad Bullet Train's Tunnel Boring Machines". 18 July 2023. Archived from the original on 19 February 2024. Retrieved 19 February 2024.
  132. ^ "Herrenknecht to Supply Mumbai-Ahmedabad Bullet Train's Tunnel Boring Machines". 18 July 2023. Archived from the original on 19 February 2024. Retrieved 19 February 2024.
  133. ^ "NHSRCL Signs Contract for the Construction of 21 km Long Tunnel including India's First 7 Km long Undersea Rail Tunnel | NHSRCL". Archived from the original on 19 February 2024. Retrieved 19 February 2024.
  134. ^ Maria, Roberto Di (7 February 2022). "RADDOPPIO PALERMO-CATANIA, PRONTO IL PROGETTO FIUMETORTO-LERCARA - Siciliainprogress" (in Italian). Retrieved 11 April 2022.
  135. ^ https://tunnelpro.it/en/projects/pa-ct-l12
  136. ^ https://www.newcivilengineer.com/latest/webuild-jv-snags-second-1bn-sicily-high-speed-rail-construction-deal-08-06-2023/
  137. ^ "Terowong Genting ECRL terpanjang di Asia Tenggara". 13 January 2022. Archived from the original on 13 January 2022. Retrieved 9 April 2022.
  138. ^ "Milliarden unters Meer". Der Spiegel. 26 May 2020. Archived from the original on 22 September 2020. Retrieved 21 January 2022.
  139. ^ "Nu starter anlægsarbejdet på Femern Bælt-forbindelsen". 1 January 2021. Archived from the original on 23 February 2022. Retrieved 26 June 2021.
  140. ^ "E4 Förbifart Stockholm – Trafikverket". Trafikverket.se. 25 September 2015. Archived from the original on 21 March 2015. Retrieved 1 February 2016.
  141. ^ "Förlängd byggtid och ökad kostnad för Förbifart Stockholm". 28 November 2019. Archived from the original on 1 February 2022. Retrieved 1 February 2022.
  142. ^ a b "Undersea rail tunnel plan complete – People's Daily Online". Archived from the original on 22 January 2022. Retrieved 22 January 2022.
  143. ^ "世界级跨海工程甬舟铁路开工建设-岩土在线". Archived from the original on 22 January 2022. Retrieved 22 January 2022.
  144. ^ a b "HS2 Phase One full business case". GOV.UK. Archived from the original on 19 April 2020. Retrieved 24 October 2023.
  145. ^ "Chiltern Tunnel". High Speed 2. Archived from the original on 4 February 2022. Retrieved 4 February 2022.
  146. ^ "Work begins boring first HS2 tunnel under Chiltern Hills". The Guardian. 13 May 2021. Archived from the original on 19 May 2021. Retrieved 21 May 2021.
  147. ^ "The HS2 Tunnel Boring Machines (TBMs)". High Speed 2. Archived from the original on 21 May 2021. Retrieved 21 May 2021.
  148. ^ "To be built at Rs 23,000 crore, Uttarakhand to get India's 'longest railway tunnel'". The Times of India. 30 August 2022. ISSN 0971-8257. Archived from the original on 3 May 2023. Retrieved 2 May 2023.
  149. ^ "PM Modi inaugurates Zojila project in Leh: All you need to know about India's longest tunnel". The Indian Express. 19 May 2018. Archived from the original on 15 December 2019. Retrieved 16 June 2019.
  150. ^ "Gadkari to initiate first blasting of all-weather Zojila Tunnel between Srinagar and Leh". 15 October 2020. Archived from the original on 21 January 2022. Retrieved 21 January 2022.
  151. ^ "Start for new Metro Line and Extension Projects in Bangkok; The Robbins Company". Tunnel-online.info. 20 February 2017. Archived from the original on 6 August 2017. Retrieved 12 July 2017.
  152. ^ "HS2 starts digging 26 miles of tunnel under London". 6 October 2022. Archived from the original on 9 October 2022. Retrieved 4 July 2023.
  153. ^ A.Ş, ÜNİBEL. "Haberler | Buca Metrosu'nun yapımı sürüyor". İzmir Büyükşehir Belediyesi. Archived from the original on 27 August 2023. Retrieved 27 August 2023.
  154. ^ "China preparing world's longest tunnel to divert Tibet river to desert". Global Construction Review. 31 October 2017. Archived from the original on 18 November 2021. Retrieved 18 November 2021.
  155. ^ "Túnel de 30 km deve abrigar trem que vai ligar São Paulo a Santos". 9 December 2013. Archived from the original on 25 July 2023. Retrieved 25 July 2023.
  156. ^ "Do You Know, That? – Railway Tunnels". En.infoglobe.cz. Archived from the original on 24 October 2021. Retrieved 1 February 2016.
  157. ^ "Grimseltunnel - Projekt". grimseltunnel.ch. Archived from the original on 17 October 2020. Retrieved 17 October 2020.
  158. ^ "ICT Bids for DPR of Assam's Tunnel Project Under Brahmaputra". 12 July 2023. Archived from the original on 19 February 2024. Retrieved 19 February 2024.
  159. ^ "The design of lot 3 of Struma motorway is completed". stroitelstvo.info (in Bulgarian). 18 November 2013. Archived from the original on 25 November 2013.
Retrieved from "https:https://www.how.com.vn/wiki/index.php?lang=en&q=List_of_longest_tunnels&oldid=1230252195"
🔥 Top keywords: Akademia e Shkencave e RPS te ShqiperiseAlexandria Ocasio-CortezBilderberg GroupCristiano RonaldoDong XiaowanMinecraftOperation GladioPrimal cutRiot FestStrictly Come Dancing (series 7)Main PageSpecial:SearchUEFA Euro 2024Wikipedia:Featured picturesInside Out 2Callum Styles.xxxCleopatraDonald SutherlandZaheer IqbalHouse of the DragonDeaths in 20242024 Copa América2024 ICC Men's T20 World CupUEFA European ChampionshipCopa AméricaLyndon DykesJessica AlbaBilly IdolSonakshi SinhaYouTubeSherri Papini kidnapping hoaxTom KimSha'Carri RichardsonThe BikeridersSabrina CarpenterThe Boys (TV series)Cristiano RonaldoJeff KentJ. Robert OppenheimerJacob FatuChappell RoanChé AdamsProject 2025Christian PulisicTaylor SwiftMaharaja (2024 film)The Boys season 4Bridgerton