High Quality Content by WIKIPEDIA articles! The Jarlsberg Tunnel (Norwegian: Jarlsbergtunnelen) is a 1,750-meter (5,740 ft) long double track railway tunnel which runs through Frodeasen in Tonsberg, Norway. Located on the Vestfold Line, the tunnel was built as part of the 7.8-kilometer (4.8 mi) double-track high-speed segment from Barkaker to Tonsberg. It is located just north of Tonsberg Station and runs between Frodegata and Tomsbakken. Most of the tunnel is blasted, although 223 meters (732 ft) is in a concrete culvert. Planning of the tunnel started in the late 1990s. Several railway interest groups advised against building the isolated segment of upgraded track without a complete plan for upgrading the entire line. Construction started in April 2009 and the new section and the tunnel opened on 7 November 2011. It was the fourth segment of the Vestfold Line to be upgraded. Данное издание представляет собой компиляцию сведений, находящихся в свободном доступе в среде Интернет в...

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