Great Seto Bridge

Great Seto Bridge
(瀬戸大橋, Seto Ōhashi)
Great Seto Bridge from Honshū (left) via the islands of Hitsuishijima and Yoshima to Shikoku
Coordinates34°23′54″N 133°48′36″E / 34.39833°N 133.81000°E / 34.39833; 133.81000
Carries4 lanes of Seto-Chūō Expressway (upper)
2 rail lines (lower)
CrossesSeto Inland Sea
LocaleHonshū and Shikoku
Maintained byHonshu–Shikoku Bridge Authority
Characteristics
DesignDouble-decked bridge system
Total length13.1 km (8.1 mi)
History
Opened1988; 36 years ago (1988)
Location
Map

The Great Seto Bridge or Seto Ohashi Bridge (瀬戸大橋, Seto Ōhashi)[1][note 1] is a series of double deck bridges connecting Okayama and Kagawa prefectures in Japan across a series of five small islands in the Seto Inland Sea. Built over the period 1978–88, it is one of the three routes of the Honshū–Shikoku Bridge Project connecting Honshū and Shikoku islands and the only one to carry rail traffic. The total length is 13.1 kilometers (8.1 mi), and the longest span, the Minami Bisan-Seto Bridge, is 1,100 m (3,600 ft).

Crossing the bridge takes about 20 minutes by car or train. The ferry crossing before the bridge was built took about an hour.

The bridges carry two lanes of highway traffic in each direction (Seto-Chūō Expressway) on the upper deck and one railway track in each direction (Seto-Ōhashi Line) on the lower deck. The lower deck was designed to accommodate an additional set of Shinkansen tracks for a proposed extension of the Shinkansen to Shikoku.[2]

  1. ^ "英語表記のガイドライン(香川県)" [English Guidelines (Kagawa Prefecture)]. 香川県 (Kagawa Prefecture). Retrieved 17 February 2021.
  2. ^ "北陸新幹線の新大阪駅、その先をどうするか". ITmedia ビジネスオンライン (in Japanese). Retrieved 2021-06-03.


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