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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]
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 ...
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 Yonaguni Monument (Japanese: 与那国島海底地形, Hepburn: Yonaguni-jima Kaitei Chikei, lit. ' Yonaguni Island Submarine Topography '), also known as the Yonaguni (Island) Submarine Ruins (与那国（島）海底遺跡, Yonaguni(-jima) Kaitei Iseki), is a submerged rock formation off the coast of Yonaguni, the southernmost of the Ryukyu Islands, in Japan.
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.
Mount Tanigawa, Japan 22,221 m (13.807 mi) 1982 Longest railway tunnel until Seikan Tunnel was opened. Water supply Eucumbene-Tumut Tunnel [43] New South Wales, Australia 22,200 m (13.794 mi) 1959 Part of the 145 km tunnel network of the Snowy Mountains Scheme: Road WestConnex: Sydney, New South Wales, Australia 22,000 m (13.670 mi) 2023
The Kanmon Railway Tunnel (関門鉄道トンネル, kanmon tetsudō tonneru) was the first undersea tunnel in Japan. It goes underneath the Kanmon Straits, connecting the islands of Honshu and Kyushu. [1] It is an important link in the Japanese rail network. Its construction began in 1936, and it was completed in November 1942, during the ...
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).