Longest underwater highway tunnels

Entrance to Tokyo Bay Tunnel – Source: popularmechanics.com

When it became apparent that a list of underwater highway tunnels by order of their length could not be found on the internet, I decided to put one together. The list is not comprehensive and meant to be a continuous work in progress, so if you know of additional underwater highway tunnels (open, under construction, or planned) that have been missed, please feel free to pass them along. Updates to the list will be made regularly.

The list provides the name of the tunnel, the year of completion in parenthesis, the city/nation Those tunnels where the length is not known are listed at the end.

1. Solbakk (uc) – Stavanger, Norway = 46,904 feet
2. Harbour (prop) – Copenhagen, Denmark = 30-40,000 feet
3. Tokyo Bay (1997) – Tokyo, Japan = 31,498 feet
4. Xiamen West (uc, 2017) – Xiamen, China = 29,627 feet
5. Shanghai Yangtze River (2009) – Shanghai, China = 29,040 feet
6. Bomlafjord (2000) – Stord, Norway = 25,952 feet
7. Eiksund (2008) – Volda, Norway = 25,547 feet
8. Kamoy (2013) – Norway = 25,322 feet
9. Oslofjord (2000) – Oslo, Norway = 23,787 feet
10. Nordkapp (1999) – Nordkapp, Norway = 22,609 feet
11. Westerschelde (2003) – Netherlands = 21,655 feet
12. Hundvåg (uc) – Stavanger, Norway = 20,900 feet
13. Qind-Huang (2011) – Qingdao City, China = 20,238 feet
14. Xiamen Xiang’an (2010) – Xiamen, China = 19,358 feet
15. Byfjord (1992) – Stavanger, Norway = 19,329 feet
16. Hvalfjörður (1998) – Reykjavik, Iceland = 18,929 feet
17. Finnoy (2009) – Norway = 18,912 feet
18. Atlantehav (2009) – Norway = 18,785 feet
19. Dublin Port (2006) – Dublin, Ireland =18,702 feet
20. Hitra (1994) – Hitra, Norway = 18,572 feet
21. Eurasia (uc, 2016) – Istanbul, Turkey = 17,717 feet
22. Froya (2000) – Norway = 17,400 feet
23. Hongmei Road South (uc, 2015) – Shanghai, China = 17,258 feet
24. Freifjord (1992) – Norway = 16,682 feet
25. Vaga (2002) – Faroe Islands = 16,203 feet
26. Clem Jones (2010) – Brisbane, Australia = 15,744 feet
27. Maracaibo Fixed Link 2 (uc) – Maracaibo, Venezuela = 14,436 feet
28. Mastrafjord (1992) – Norway = 14.511 feet
29. Valderoy (1987) – Norway = 13,848 feet
30. Halsnoy (2008) – Norway = 13,514 feet
31. Drogden/Oresund (2000) – Copenhagen/Malmo, Denmark/Sweden = 13,287 feet
32. Godoy (1988) – Norway = 12,608 feet
33. Hvaler (1989) – Norway  = 12,303 feet
34. Eiganes (uc, 2019) – Stavanger, Norway = 12,136 feet
35. Wuhan-Changjiang (2008) – Wuhan, China = 11,838 feet
36. Ellingsoy (1987) – Norway = 11,546 feet
37. Tromsoysund (1994) – Norway = 11,480 feet
38. Kanmon (1958) – Japan = 11,352 feet
39. Ibestad (2000) – Norway = 11,139 feet
40. Eastern Harbour Crossing (1989) – Hong Kong, China = 11,088 fee
41. Sloverfjord (1997) – Norway = 10,945 feet
42. Elbe (1975) – Hamburg, Germany = 10,939 feet
43. Koje-do  (2009) – Busan, South Korea = 10,824 feet
44. Queensway (1934) – Liverpool, United Kingdom = 10,630 feet
45. Suez Canal (prop) – Port Said, Egypt = 9,843 feet
46. Suez Canal (prop) – Suez, Egypt – 9,843 feet
47. Musko (1964) – Sweden = 9,709 feet
48. Vardo (1982) – Norway = 9,479 feet
49. Sydney Harbour (1992) – Sydney, NSW, Australia = 9,187 feet
50. Changjiang Road (uc, 2015) – Shanghai, China = 9,187 feet
51. Brooklyn-Battery (1950) – New York City, NY = 9.117 feet
52. Holland (1927) – New York City, NY/NJ, USA = 8,557 feet
53. Ted Williams (1995) – Boston, MA, USA = 8,448 feet
54. Lincoln (1945/1957) = New York City, NY/NJ, USA = 8,216 feet
55. Thimble Shoal Channel (1964) – Hampton Roads, VA, USA = 8,187 feet
56. Chesapeake Channel (1964) – Hampton Roads, VA, USA = 7,941 feet
57. Fort McHenry (1985) – Baltimore, MD, USA = 7,920 feet
58. Kingsway (1971) – Liverpool, United Kingdom = 7,874 feet
59. Coatzacoalcos (uc, 2016) Coatzacoalcos, Mexico = 7,501 feet
60. Hampton Roads (1957) – Hampton Roads, VA, USA = 7,479 feet
61. Baltimore Harbor (1957) – Baltimore, MD, USA = 7,392 feet
62. Guadalquivir I (prop) – Seville, Spain = 7,172 feet
63. Ring Road/Gulf (2011) – St. Petersburg, Russia – 6,562 feet
64. Western Harbour (1997) – Hong Kong, China = 6,498 feet
65. Queens Midtown (1940) – New York City, NY, USA = 6,414 feet
66. Guadalquivir II (prop) – Seville, Spain = 6,251 feet
67. Piet Hein (1997) – Amsterdam, Netherlands = 6,234 feet
68. Cross Harbour (1972) – Hong Kong, China = 6,103 feet
69. Santos-Guaruja (prop) – Santos, Brazil = 5,578 feet
70. Sumner (1934) – Boston, MA, USA = 5,653 feet
71. Tyne (1967/2011) – Newcastle, United Kingdom = 5,500 feet
72. Ij (1968) – Amsterdam, Netherlands = 5,369 feet
73. Ahmed Hamdi (1981) – Egypt = 5,348 feet
74. Louis-Hippolyte Lafontaine – Montreal, QC, Canada = 5,280 feet
75. Orlovski (2016) – St. Petersburg, Russia = 5,250 feet
76. Weser (2004) – Bremerhaven, Germany = 5,250 feet
77. Aktio–Preveza Undersea – Aktio, Greece (2002) = 5,165 feet
78. Detroit-Windsor (1930) – Detroit, MI/ON, USA/Canada = 5,160 feet
79. Callahan (1961) – Boston, MA, USA = 5,070 feet
80. Monitor-Merrimac Memorial (1992) – Hampton Roads, VA, USA = 4,800 feet
81. Vistula (2015) – Gdansk, Poland = 4,921 feet
82. Maas (1942) – Rotterdam, Netherlands = 4,517 feet
83. Liefkenshoek (1991) – Antwerp, Belgium = 4,488 feet
84. Blackwall (west) (1897) – London, United Kingdom = 4,440 feet
85. Coen (1966/2013) – Amsterdam, Netherlands = 4,221 feet
86. PortMiami (2014) – Miami, FL, USA = 4,200 feet
87. Midtown (1962 ) – Hampton Roads, VA, USA = 4,194 feet
88. Nord (1992) – Netherlands = 4,178 feet
89. Sluiskil (2015) – Netherlands = 3,937 feet
90. Blackwall (east) (1967) – London, United Kingdom = 3,852 feet
91. Downtown (1952/1989) – Hampton Roads, VA, USA = 3,813/3,350 feet
92. Washburn (1950) – Houston, TX, USA = 3,791 feet
93. Posey Tube (1928) – Oakland, CA, USA = 3,545 feet (Thank you, John)
94. Bankhead (1941) – Mobile, AL, USA = 3,389 feet
95. Webster Street Tube (1963) – Oakland, CA, USA = 3,350 feet (Thank you, John)
96. George C. Wallace (1973) – Mobile, AL, USA = 3,000 feet
97. Thorold (1967) – St. Catharines, ON, Canada = 2,756 feet
98. Rostok (2003) – Rostock, Germany = 2,599 feet
99. Kennedy (1969) – Antwerp, Belgium = 2,270 feet
100. Massey (1959) – Vancouver, BC, Canada = 2,063 feet
101. Belle Chase (1956) – New Orleans, LA, USA = 1,938 feet
102. Gote (2017) – Gothenburg, Sweden – 1,645 feet
103. Old Elbe/St. Pauli (1911) – Hamburg, Germany = 1,398 feet
104. Townline (1972) – Welland, ON, Canada = 1,080 feet
105. Harvey (1957) – New Orleans, LA, USA = 1,080 feet
106. East Main Street (1972) – Welland, ON, Canada = 1,000 feet +/-
107. Central-Wan Chai (2015) – Hong Kong, China = 987 feet
108. Houma (2013) – Houma, LA, USA = 960 feet (Thank you, John)
109. Henry Kinney (1960) – Fort Lauderdale, FL, USA = 864 feet
110. Melocheville (1957) – Melocheville, QC, Canada = 747 feet
111. Saint Remi (1954) – Montreal, QC, Canada = 486 feet
112. Houma (1961) – Houma, LA, USA = unknown

Sources:

• http://www.tunneltalk.com/Brazil-19Mar2014-Prequalifers-announced-for-Santos-Guaruja-immersed-tunnel-link.php
• http://www.virginiadot.org/projects/resources/TunnelFact_Sheet_080729.pdf
• http://www.wegenwiki.nl/Kennedytunnel
• http://www.tunneltalk.com
• http://www.arup.com/projects/xiamen_xiangan_tunnel.aspx
• en.wikipedia.org
• http://www.dailynewsegypt.com/2013/04/28/egyptian-government-creates-three-new-tunnels-under-suez-canal/
• http://www.cowi.dk/menu/project/Brotunnelogvandbygning/Tunneler/Saenketunneler/Documents/0233-1706-044e-09c_low.pdf
• tunnelbuilder.com
• http://lotsberg.net/data/subsea.html
• http://en.wikipedia.org/wiki/Ryfast