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Hvaler Tunnel
The Hvaler Tunnel ( no, Hvalertunnelen) is a subsea road tunnel which connects the island of Kirkøy to the rest of Hvaler in Viken county, Norway. The tunnel opened in 1989 and is long and deep with an incline of 10% at its steepest point, located on Norwegian County Road 108. History Prior to the tunnel, services were provided by Hvaler Båt- og Fergeselskap. In 1986, Hvalertunnelen AS was established to take up a loan to build the tunnel, and pay the loan through collected toll fares. Tolls started at 130 Norwegian krone The krone (, abbreviation: kr (also NKr for distinction); code: NOK), plural ''kroner'', is currency of the Kingdom of Norway (including Svalbard). Traditionally known as the Norwegian crown in English. It is nominally subdivided into 100 ''à ... (NOK) and ended at 154 by 2007, when the loan was paid off. For another two years, a NOK 20 fee was collected to finance a bicycle path on the island. Since 22 April 2010, it is possible to make mobile t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subsea Road Tunnel
An underwater tunnel is a tunnel which is partly or wholly constructed under the sea or a river. They are often used where building a bridge or operating a ferry link is unviable, or to provide competition or relief for existing bridges or ferry links.Sullivan, WalterProgress In Technology Revives Interest In Great Tunnels New York Times, June 24, 1986. Retrieved 15 August 2010. While short tunnels are often road tunnels which may admit motorized traffic, unmotorized traffic or both, concerns with ventilation lead to the longest tunnels (such as the Channel Tunnel or the Seikan Tunnel) being electrified rail tunnels. Types of tunnel Various methods are used to construct underwater tunnels, including an immersed tube and a submerged floating tunnel. The immersed tube method involves steel tube segments that are positioned in a trench in the sea floor and joined together. The trench is then covered and the water pumped from the tunnel. Submerged floating tunnels use the law of buoya ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
