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The Mount Victoria Tunnel in the New Zealand capital city of Wellington is 623 metres (slightly more than a third of a mile) long and 5 metres (16.4 ft) in height, connecting Hataitai to the centre of Wellington and the suburb of Mount Victoria, under the mount of the same name. It is part of State Highway 1. ==History== The tunnel was built in 15 months〔 by the Hansford and Mills Construction Company. The project cost around £132,000 and greatly reduced travel time between the Eastern Suburbs and the central business district of Wellington. Construction employed a standard tunnel-excavation technique in which two teams of diggers begin on either side of the obstacle to be tunnelled through, eventually meeting in the centre. The initial breakthrough, when the two separate teams of diggers met, occurred at 2.30pm on 31 May 1930, and the first people to pass through the breakthrough were tunnellers Philip Gilbert and Alfred Graham. The tunnel was opened officially by the mayor of Wellington, Thomas Hislop, on 12 October 1931. Although the tunnel has been eclipsed in terms of features and amenities by more recent tunnels around the country, such as the Terrace Motorway Tunnel, the Mount Victoria Tunnel was the first road tunnel in New Zealand to be mechanically ventilated. There has been a long-standing designation for a second parallel tunnel to the north, in order to relieve peak period congestion resulting from lane merges at both ends of the tunnel. A pilot tunnel was bored through in 1974 to investigate the technical feasibility and still exists, although the eastern end has been bricked up and the western end lies on private property. Plans to build the second tunnel paralleled the original plan to complete the Wellington Urban Motorway to the tunnel to provide a motorway bypass of the whole of central Wellington. The second tunnel component was shelved indefinitely in 1981 when budget cuts meant that a scaled-down motorway extension was proposed that would terminate at the existing tunnel. Since that date there have been no serious proposals to duplicate the existing tunnel, although cost estimates for such work were at $40 million in the mid-1980s. Traffic lights have been installed at the end of the city approach to the tunnel to ease congestion and improve safety at the Basin Reserve roundabout. Mount Victoria Tunnel became part of State Highway 1 in 1997 〔 when Transit New Zealand designated the road from Wellington Airport to the Basin Reserve a State Highway. The NZTA has no plans in the next ten years to duplicate the tunnel, but plans to investigate work to upgrade the city approaches around the Basin Reserve, including a possible flyover to Buckle Street, to reduce congestion at the city end of the tunnel and around the Basin Reserve. A study is currently underway (The Ngauranga to Airport Study) investigating long-term transport options for the route. The study indicates that a new tunnel would cost around (NZ)$170 million. During World War II, the government planned to use the tunnel as an air raid shelter if Wellington were attacked. However, the plan was scrapped, as the tunnel was thought to be too vulnerable to assault from either side by hostile troops. A well-known local story revolves around a murder that occurred during the construction of the Mount Victoria Tunnel. A young woman named Phyllis Avis Symonds (17) was murdered by George Errol Coats (29), who buried her alive in the fill from the tunnel.〔http://nla.gov.au/nla.news-article46634357〕 It is suspected that the girl was pregnant by her lover and the story was later covered in the Wellington newspapers.〔 Upon learning of the murder, police ordered workers to excavate the tunnel's fill in order to find the victim's body.. Phyllis Symonds was buried in Karori Cemetery.〔http://undergroundhistory.blogspot.co.nz/2014/11/the-tragedy-of-phyllis-symons.html〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Mount Victoria Tunnel」の詳細全文を読む スポンサード リンク
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