Tunnel with a length of 453 m with an excavation section of some 84.47 m². Completed following the NATM, via blasting and mechanical means (backhoe) on fractured granite.

Tunnel with a length of 1,456 m with an excavation section of some 120 m². Completed following the NATM, via blasting and mechanical means (backhoe) on cemented conglomerates, clay and […]

Tunnels with a length of 225 and 165 m with an excavation section of some 150 m². Excavation with blasting and mechanical means (backhoe) on flysch type rock (rocks-loams-sandstone).

The Aspe-El Carrús has a length of 3480 m, going through the municipalities of Aspe and Elche, in Alicante province. We can highlight two viaducts and a mine tunnel. The […]

The San Andrés tunnel is suitable for 653 m, with a 95 m² free section. Completed using conventional measures, via perforation and blasting on lutite and sandstone rocks. The supports […]

Including a section of single lane highway, 2 km in length, whose main parts were: The Amaña and Katillu tunnels, 245 m and 185 m in length respectively. The Ego […]

Tunnel with a length of 308.91 m with an excavation section of some 23 m². The excavation took place using mechanical methods (ITC) in conglomerate and clay loam.

Completion of 2180 m of two-way tunnels on Line 3 of the Bilbao Metro between Etxebarri and Txurdinaga, with two cavern stations and the corresponding access cannons and lift shafts, […]

The Durango-Amorebieta/Etxano section is from kilometre point 0+000 (connection point with the Abadiño-Durango section) and 4+600 (connection point with the Amorebieta /Etxano-Amorebieta/Etxano section), with a length of 4.6 km. The […]