Tokyo Gate Bridge

Tokyo Gate Bridge
東京ゲートブリッジ

Tokyo Gate Bridge, January 2015
Coordinates 35°36′41″N 139°49′38″E / 35.61139°N 139.82722°E / 35.61139; 139.82722Coordinates: 35°36′41″N 139°49′38″E / 35.61139°N 139.82722°E / 35.61139; 139.82722
Carries Road traffic (4 lanes), pedestrians
Crosses Tokyo Bay
Locale Kōtō City (Tokyo, Japan), between Chubo and Wakasu artificial islands)
Characteristics
Design cantilever bridge
Total length 2,618 metres (8,589 ft) including approaches
Width 21 metres (69 ft)
Height 87.8 metres (288 ft)
Longest span 440 metres (1,440 ft)
Number of spans 3
Clearance below 54.6 metres (179 ft)
History
Construction begin 2002
Construction end 2011
Opened 2012
Statistics
Toll None
Tokyo Gate Bridge
Location in Special wards of Tokyo

Tokyo Gate Bridge (東京ゲートブリッジ Tōkyō gēto burijji) is a truss cantilever bridge across Tokyo Bay in Kōtō, Tokyo, Japan. It opened on 12 February 2012[1][2] with an estimated total construction cost of ¥113,000,000,000 (equivalent to ¥113,340,000,000 in 2013) for the Stage II section of highway including the bridge.[3]

History

Part of a new four-lane highway ringing Tokyo, construction began in 2002 and was scheduled for completion in 2011, but the opening to traffic was delayed until 2012. With the provisional name of Tokyo Bay Waterfront Bridge (東京港臨海大橋 Tōkyōwan rinkai ōhashi)[4] the public was asked for suggestions. From the 12,223 received, "Tokyo Gate Bridge" was chosen and officially announced on 15 November 2010.[5]

Design

The rather unusual design is a result of opposing requirements: to be high enough to allow large ships to pass underneath, but low enough not to interfere with air traffic to the nearby Haneda Airport. It is a double cantilever bridge, which means that the truss sections from either side can be completed in balance, and then joined by addition of the relatively short central span.[6] In effect, this bridge is a somewhat gawky deformation of a single span of the iconic Forth Bridge in Scotland. A more fanciful view, of the two sides being monsters facing off, has given it the nickname of 'Dinosaur Bridge' (恐竜橋 Kyōryū-bashi)[7]

References

  1. ↑ "Stay in Tsukiji, see Tokyo Gate Bridge". The Japan Times. 24 February 2012. Retrieved 3 August 2016.
  2. ↑ "Tokyo Gate Bridge opens to traffic". Japan Today. 13 February 2012. Retrieved 3 August 2016.
  3. ↑ Official "flyer" shows Stage II including Tokyo Gate Bridge, with a budget as of November 2009 "東京港臨海道路II期事業の概要" [Tokyo Bay Waterfront Highway Stage II work overview] (pdf) (in Japanese). Japan: Ministry of Land, Infrastructure, Transport and Tourism. 2011. Archived (PDF) from the original on 5 January 2013. Retrieved 30 June 2012.
  4. ↑ Yoneyama, Haruo; Obara, Kouehei; Shigihara, Toru (2010). Plan and Design of 'The Rinkai Ohashi Bridge' in Tokyo Port (PDF). The 5th Civil Engineering Conference in the Asian Region and Australasian Structural Engineering Conference. pp. 203–208. ISBN 9780646537276. Retrieved 3 August 2016.
  5. ↑ 東京港臨海大橋（仮称）の名称決定について [Official name for Tokyo Bay waterfront bridge]. News Release (in Japanese). Japan: Tokyo Metropolitan Government. 15 November 2010. Archived from the original on 27 November 2010. Retrieved 30 June 2012.
  6. ↑ Official "flyer" updated with the top photo showing the central span being added. At the bottom is an illustration of the constraints from air and sea. "【最新版】TGBチラシ_H23.3.3_" [Tokyo Gate Bridge latest update 3 Mar 2011] (pdf) (in Japanese). Japan: Ministry of Land, Infrastructure, Transport and Tourism. 2011. Archived (PDF) from the original on 8 October 2011. Retrieved 6 June 2011.
  7. ↑ Cooper, Chris; Matsuda, Kiyotaka (12 February 2012). "'Dinosaur Bridge' leads Tokyo push to ease traffic and boost economy". Japan Times. Bloomberg. p. 2. Archived from the original on 30 April 2013. Retrieved 3 August 2016.
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