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TUNNELS OF PAJARES AVE MADRID - ASTURIAS (SPAIN)
> Piping length. 9.79 km.
> Inside diameter. 8.50 m.
> Civil protection and safety systems in the tunnels of the Pajares Bypass.
> Waterproofing works and execution of an independent drainage system for waste and infiltration water.
> Coating of the gallery of Folledo at Stretch La Roba - Pola de Lena.
*With a total length of 25 km, the tunnels of Pajares are the second longest tunnels in Spain and the seventh longest tunnels worldwide.
* They allow the passage trough the Cantabrian Mountains, reducing current route from 83 km to 50 km.