More than 18 km of tunnels, false tunnels and urban tunnels executed.

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Minglanilla Tunnels

Construction of two 700m long tunnels for high-speed rail infrastructure.

Punta Langosteira Tunnel

480m coastal tunnel.

Requejo Tunnel

4.1 km long tunnel for high speed rail infrastructure.

Túnel de acceso a Santiago

500m long urban tunnel.

Bouzas Tunnel

Construction of 838 m of semi-covered tunnel and 370 m of tunnel.

Cacheiras Tunnel

300 m false tunnel for an urban park.

Hórreo Tunnel

Construction of a 750m urban tunnel under the SC-20 motorway.

Zapateira Tunnel

Construction of four false tunnels of 300m of medium length.

Bicentennial Semitunnel, Costa Rica

Construction of 12,600 linear meters of pre-excavated concrete secant secant piles at a depth of up to 18 meters. The structure of the traffic circle was built with AASHTO type precast beams, pre-slabs and concrete slabs. The works took 14 months to complete