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At opening time, the roadway had the highest toll fee in Japan – a one-way trip costs ¥5050 or ¥334 per kilometer. [12] Due to its expensive toll, analysts see lower traffic volume than what Japan Highway Public Corporation, the operator of the roadway, expected at 25,000 cars. [13]
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 metres (190 ft) below sea ...
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 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 average: 30 m: 1934–1957
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.
An undersea volcano erupted off Japan three weeks ago, providing a rare view of the birth of a tiny new island, but experts say it may not last very long. The unnamed undersea volcano, located ...
Submerged floating tunnels can be anchored to the seafloor (left) or suspended from a pontoon (right) A submerged floating tunnel (SFT), also known as submerged floating tube bridge (SFTB), suspended tunnel, or Archimedes bridge, is a proposed design for a tunnel that floats in water, supported by its buoyancy (specifically, by employing the hydrostatic thrust, or Archimedes' principle).
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