The Marão Tunnel

The longest tunnel of the Iberian Peninsula.

Located on the motorway between Amarante and Vila Real, the tunnel is one of the largest dual road tunnels in the Iberian Peninsula with 5.6 km and will serve as an alternative to the National Road IP4.

In this project, Sotécnica performed the assembly of the ventilation systems of the pedestrian and vehicular galleries, the air conditioning of the technical buildings of support to the tunnel and also the electric panels and the electrical installation.

After the tunnel was inaugurated on May 7, 2016, Sotécnica was also awarded with the maintenance and general technical assistance for the electrical, safety and HVAC installations of the tunnel.

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