1,030 metres

left hand tunnel

Construction of a double tunnel

The Capistrano tunnels allow the Autovía del Mediterráneo A-7 highway to pass under the hill of San Juan de Capistrano.

The Capistrano tunnels are part of the Figiliana - Nerja section of the A-7 and enable the San Juan de Capistrano pass to be crossed. It is a double tunnel, with the left hand tunnel being 1,030 m long and the right hand tunnel being 920 metres.

The internal route is a 1,000-metre radial curve, with a maximum interior height of 80 metres, and a longitudinal gradient of approximately 3%.

The tunnels pass through rock made of schists and marbles, affected by numerous fault lines, some of which are highly significant due to their size, such as the Frigiliana fault.

The drilling and supports for the tunnel were constructed using mechanical excavation techniques and the Bernold system in the schist zone, while the New Austrian Tunnelling Method was used in the marble zone using explosives to excavate this section.


  • Location: Málaga, Spain.
  • Contract type: Construction.
  • Infrastructure: Construction of a double tunnel that is 1,030 metres long through the left-hand tunnel, and 920 metres through the right-hand tunnel, which is part of the Autovía del Mediterráneo highway.
  • Year of completion of construction: 1999

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