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Location; Country: Japan: ... it includes a 4.4 km bridge and 9.6 km tunnel underneath the bay—the fourth-longest underwater tunnel in the world. [10] Overview
The Seikan Tunnel (Japanese: 青函トンネル, Seikan Tonneru or 青函隧道, Seikan Zuidō) is a 53.85 km (33.46 mi) dual-gauge railway tunnel in Japan, with a 23.3 km (14.5 mi) portion under the seabed of the Tsugaru Strait, which separates Aomori Prefecture on the main Japanese island of Honshu from the northern island of Hokkaido.
the second-longest road tunnel in Japan (~10.7 km) Tokyo Bay Aqua-Line bridge-tunnel: 18 December 1997: Kawasaki, Kanagawa: Kisarazu, Chiba: the third-longest road tunnel in Japan Enasan Tunnel - Chūō Expressway: 1985: Nagano: Nakatsugawa City, Gifu: the fourth-longest road tunnel in Japan (~8.6 km) Ikuta Tunnel - Musashino Line: 1976: Ikuta ...
Kanmon Railway Tunnel: Kanmon Straits, Japan: The first undersea tunnel in Japan, connecting the islands of Honshu and Kyushu. One of three tunnels underneath the Kanmon Straits: 3.604 km: 1936–1942 Lincoln Tunnel: New York, USA: Set of road tunnels built in three stages, crossing the Hudson River between Manhattan and New Jersey: 2.4 km ...
Just after 5 a.m. on August 30, water began flooding a vast underground chamber called the "cathedral" just north of Tokyo. The gushing water, captured by security cameras, was the rain that was ...
Kanmon pedestrian tunnel. In Japan, the Kanmon Roadway Tunnel (関門国道トンネル, kanmon kokudō tonneru) carries National Route 2 under the Kanmon Straits. [1] At the time of its construction, it was the longest undersea highway in the world. [2] It opened in 1958. The overall length is 3,461 metres (11,355 ft) meters, and it is 58 ...
Despite this, the part of the Tsugaru Strait considered to be in international waters is still within Japan's exclusive economic zone, [3] and the Seikan Tunnel remains entirely under Japanese jurisdiction even though part of it is technically outside Japan's territorial waters.
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