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Mount Bolu Tunnel : ウィキペディア英語版 | Mount Bolu Tunnel
Mount Bolu Tunnel ((トルコ語:Bolu Dağı Tüneli)) is a long highway tunnel constructed through the Bolu Mountain in Turkey between Kaynaşlı, Düzce and Yumrukaya, Bolu.〔 ==Construction== The tunnel is part of the Gümüşova-Gerede Highway within the Trans-European Motorway project, which was carried out by the Turkish Bayındır and Italian Astaldi joint venture since April 16, 1993.〔 The total cost of the tunnel is about US$300 million. It has twin wide bores carrying three lanes of traffic in each direction. The tunnel crosses the North Anatolian Fault. The November 12, 1999 Düzce earthquake (MW=7.2) caused substantial damage to the tunnel and viaducts, which were under construction at the time of the earthquake.〔 On September 4, 2005 the excavation of the tunnel in the Istanbul-Ankara direction was finished. The excavation for the tunnel in the Ankara-Istanbul direction was completed by the beginning of August 2005.
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 Bolu Tunnel」の詳細全文を読む
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