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The Envalira Tunnel runs between Pas de la Casa near the border with France and Grau Roig (Ski resort), it enables its users to avoid the Envalira Pass. It is amongst the highest road tunnels in Europe. Although situated within the borders of Andorra, the entrance at Pas de la Casa can only be reached via a bridge that is situated in France. The Andorra/France border post is therefore situated a short distance within France at the start of the access bridge. On the French side it is connected to the RN22 and on the Andorran side to the CGII.〔(【引用サイトリンク】title=Home - Tunel Envalira )〕 Plans for a tunnel were developed in Andorra during the late 1950s. In 1963, the Envalira Tunnel design tender was awarded to French engineers Semet and Phillip Studies, and subsequent negotiations were conducted for years and the access roads were improved. In June 1, 1999, Spanish companies FCC and NECSO (today ACCIONA) began construction work on the Grau Roig side of the massif; and in August 2, 1999, work began on the Pas de la Casa side. The Envalira Tunnel complies with the highest European safety recommendations. ==Operator & Concession== The Tunnel is operated by Globalvia (a joint venture between Spanish companies Caja Madrid and FCC) as a toll tunnel. The concession period is for 50 years.〔(【引用サイトリンク】title=Globalvia - Concesiones )〕 The construction cost was 11 Bn Pesetas (approx. 80 Million Euros).〔http://elpais.com/diario/1999/09/03/catalunya/936320838_850215.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「Envalira Tunnel」の詳細全文を読む スポンサード リンク
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