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Variante di Valico is a deviation of the Italian A1 motorway under construction , between Barberino del Mugello and Sasso Marconi in northern Italy. It is 62.5 km long and with long stretches in viaduct and tunnel, the longest tunnel being 8.6 km long. It runs parallel to the central part of the Bologna-Florence motorway. The earlier motorway will not be closed, giving optional routes along two parallel motorways that split before the Appennini and merge again after the mountainous section. The twin-bore Sparvo Tunnel or 'Galleria di Sparvo' was completed in July 2013; the longer Val di Sambro tunnel had not been completed. Schematics and Photos of the works are available on Skyscrapercity〔() Schematics〕 and YouTube〔() Video of "Martina" The Worlds Largest Earth Pressure Balance TBM at the time. Superseded on Highway 99 in Alaska in 2013〕 〔() More on The Tunnel Sections.〕 Recent Bing Maps Aerial images include the following: see details reference description below. 〔((Bing)Val Di Sambro Tunnel Northern Entrance (Both Bores complete) )〕 〔((Bing)Val Di Sambro Tunnel Southern Entrance (neither Bore complete) )〕 〔((Bing)Scarvo Tunnel Northern Entrance (Both Bores complete) ( Note complete short viaduct and another small tunnel to north )〕 〔((Bing)Scarvo Tunnel Southern Entrance One Bore complete pre July 2013 )〕 〔((Bing)2 more short tunnels and connecting viaduct to south of main tunnels )〕 ==References== 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「Variante di Valico」の詳細全文を読む スポンサード リンク
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