Tokyo Bay Aqua-Line

Tokyo Wan Aqua-Line Expressway sign
Tokyo Wan Aqua-Line Expressway
東京湾アクアライン
Map
The Tokyo Bay Aqua-Line highlighted in red
Route information
Length23.7 km (14.7 mi)
Existed1997–present
Component
highways		 National Route 409
Major junctions
West endKawasaki Ukishima Junction
Shuto Expressway Bayshore Route
in Kawasaki, Kanagawa
Section 1
East endKisarazu Interchange
Ken-Ō Expressway in
Kisarazu, Chiba
Location
CountryJapan
Highway system
Tokyo Bay Aqua-Line

東京湾アクアライン
Tokyo Bay Aqua-Line (bridge section)
Tokyo Bay Aqua-Line (bridge section)
Coordinates35°27′47″N 139°52′31″E / 35.46306°N 139.87528°E / 35.46306; 139.87528
Carries4 lanes of National Route 409[1]
CrossesTokyo Bay
Locale
Other name(s)Trans-Tokyo Bay Highway
Characteristics
Design
Total length
  • bridge: 4,384 metres (14,383 ft)[2]
  • tunnel: 9,600 metres (31,496 ft)
Width22.9 metres (75 ft)[2]
Longest span240 metres (787 ft)[3]
Piers in water42[2]
Clearance below29 metres (95 ft)[2]
History
Fabrication by
  • bridge: Yokogawa Bridge Corp.[4] and JFE Engineering[5]
  • tunnel:
Construction start1989
Construction cost¥1.4 trillion
Opened18 December 1997 (1997-12-18)
Location
Map
Tokyo Bay Tunnel
Umihotaru, where the bridge transitions to tunnel
Umihotaru, where bridge transitions to tunnel
Overview
Status
  • 2 in use
  • 1 planned
StartUmihotaru Island
EndUkishima, Kawasaki, Kanagawa
Operation
ConstructedTaisei[6]
Technical
No. of lanes2 (unidirectional) in each of 2 tunnels
Highest elevationsea level
Lowest elevation−45 metres (−148 ft)
Width
  • 14.1 metres (46 ft) OD
  • 11.9 metres (39 ft) ID
  • 10.5 metres (34 ft) roadway
Grade4%[7]

The Tokyo Bay Aqua-Line (東京湾アクアライン, Tōkyō-wan Akua-rain[8]), also known as the Trans-Tokyo Bay Expressway, is an expressway that is mainly made up of a bridge–tunnel combination across Tokyo Bay in Japan. It connects the city of Kawasaki in Kanagawa Prefecture with the city of Kisarazu in Chiba Prefecture, and forms part of National Route 409. With an overall length of 23.7 km, it includes a 4.4 km bridge and 9.6 km tunnel underneath the bay—the fourth-longest underwater tunnel in the world.[9]

  1. ^ "Developments of transportation and industries, do bring a more comfortable life to every body". Tokyo wan Aqua-line. 1998. Archived from the original on 3 December 1998. Retrieved 6 March 2015.
  2. ^ a b c d Shioi, Y.; Nakamura, S. (1994). "8: Design Concept of the Trans-Tokyo Bay Bridge". In Pritchard, B.P. (ed.). Continuous and Integral Bridges. London: E & FN Spon. pp. 75–84. ISBN 0-419-19030-9. Retrieved 8 March 2015.
  3. ^ Nagai, Masatsugu; Okui, Yoshiaki; Kawai, Yutaka; Yamamoto, Masaaki; Saito, Kimio (2014). "23: Bridge Engineering in Japan". In Chen, Wai-Fah; Duan, Lian (eds.). Handbook of International Bridge Engineering. Boca Raton: CRC Press. p. 1048. ISBN 978-1-4398-1030-9. Retrieved 6 March 2015.
  4. ^ "Steel Bridges: Structures in Japan". Yokogawa Bridge Corporation. Archived from the original on 7 January 2015. Retrieved 6 March 2015.
  5. ^ "Girder bridges". JFE Engineering Corporation. Retrieved 6 March 2015.
  6. ^ "Taisei Corporation's Journey over 140 Years" (PDF). Taisei Corporation. 2014. Archived from the original (PDF) on 2 April 2015. Retrieved 8 March 2015.
  7. ^ Funasaki, Tsuneyoshi; Yamada, Norio; Izumi, Yasutaka; Miki, Keizou (1998). "Construction of Trans-Tokyo Bay Highway". IABSE Reports. 78: 43–48. doi:10.5169/seals-59019.
  8. ^ Katakana-shingo-jiten, Gakken 2003, ISBN 4-05-301351-8
  9. ^ Hotta, Kenji (2002). "4: Tokyo Bay Reformation". In Chen, Jiyu; Eisma, Doeke; Hotta, Kenji; Walker, H. Jesse (eds.). Engineered Coasts. Dordrecht: Kluwer Academic. pp. 94–95. ISBN 1-4020-0521-0. Retrieved 6 March 2015.