Pigra has a great recognition in the speciality of tunnels and subway works, both in railroads, subways, roads, hydraulic works and mines. We have carried out the drafting of projects and specialized annexes, construction management and technical assistance.

During the operation phase, we carry out the monitoring and inspection of its condition, using state-of-the-art technology such as drones and remote satellite sensors. Our highly qualified staff ensures a comprehensive service to our clients, providing geotechnical solutions as well as fully detailed analyses.

In the field of installations that provide the tunnel with lighting, ventilation, operation and safety, Pigra incorporates its knowledge of new technologies and new materials.

Internationally, Pigra collaborates in the drafting of tunnel manuals for governments in Latin America.

Some of our projects:

Abrera-Cardedeu connection tunnel

Connection tunnel between the Abrera and Cardedeu DWTPs. Fontsanta-Trinitat section.

Drafting of construction project.

Client: ATLL

Construction of tunnels on the C-25

Technical assistance to the client in the construction of the “Eix Transversal” road tunnels. Vic – Girona section. Fontfreda, Bruc and Romegats tunnels, among others.

Client: Cedinsa

Construction of the Montant de Tost tunnel

Construction management in the construction of the Montant de Tost tunnel on the C-14 highway. Organyà – La Seu d’Urgell section.

Client: GISA

Vallirana Tunnel

Technical assistance to the client in the construction of the Vallirana bypass tunnel.

Client: Ministry of Public Works.

Barcelona metro project portfolio

Pigra Engineering has worked on numerous projects for the modernization and extension of the Barcelona metro network. Our most relevant projects are:

  • New L5 station between Collblanc and Pubilla Cases stations. Construction Management.

  • Construction of the new access to Can Vidalet station on L5. Construction Management.

  • Technical assistance to the client for the construction of stations for the new L9 in Barcelona.

  • Extension of the S5 line of FGC in Terrassa. Infrastructure, superstructure and electrification design.

Clients: Infraestructures.cat, TMB, FGC, Ajuntament de Barcelona.

Tunnel inspection and auscultation

Long-term contracts for the inspection and auscultation of the Vallvidrera, Bracons, C-32 and Cadí tunnels, among others.

Clients: Abertis, Tabasa, Direcció General d’Infraestructures de mobilitat.

Tunnel lighting design and renovation

Renovation of the ventilation system and implementation of an LED lighting system in the Bruc tunnel.

Lighting design of the “Nou del Berguedà” tunnel.

Clients: Infraestructures.cat, Abertis, Tabasa, Ministry of Public Works.

Technical assistance – UTE Glòries

Technical assistance to the UTE in charge of the construction of the new Plaça de les Glòries, Barcelona.

Client: Private Client – UTE Glòries

Construction of the tunnel from Tremp to La Pobla

Construction Management for the execution of the new tunnel on the C-13 highway.

Client: Infraestructures.cat