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Podvugleš Tunnel
Podvugleš Tunnel ((クロアチア語:Tunel Podvugleš)) is one of 13 tunnels found on the Croatian A6 motorway route. Its tubes are and long. It is located between Vrbovsko and Ravna Gora interchanges. The tunnel is tolled within the A6 motorway closed toll collection system. There are no other toll plazas related to use of the tunnel. Various publications spell name of the tunnel as ''Podvugleš'' and ''Pod Vugleš'', however the tunnel is signposted as ''Podvugleš Tunnel''. Construction of the tunnel was completed by Konstruktor.
==Construction==
Construction of Podvugleš Tunnel was started by Spie Batignolles and Mediteran Union Tunel. The construction works contract was cancelled in 2001, and the works were resumed by Konstruktor in 2002 after a new contract was awarded to them. Konstruktor completed the construction of the first tunnel tube by June 2003 and the second one in June 2007.〔 The tunnel was executed using the New Austrian Tunneling method.
Construction of the tunnel was hindered by low air temperatures, dropping to . This was especially problematic as concrete plant used for the works was away. Later, during execution of the secondary tunnel tube lining, the tunnel caved in due to a hydraulic failure of surrounding soil, caused by considerable inflow of meltwater. The failure affected a section of the tunnel, and of rock and soil had to be removed to remedy the situation. The incident, however, caused no delay of completion schedule.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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