Follo line tunnels
Construction of the railway systems of the longest railway tunnel in the Nordic countries, that consists of two parallel tunnels between the cities of Oslo and Ski.
Scope: Procurement and construction of the railway systems and permanent mechanical equipment (traction power supply, overhead catenary system, infrastructure power supply, low voltage system, cable and conduits, fire fighting systems and telecom).
Client: Banenor (state owned enterprise responsible for the management of the Norwegian railway infrastructure), through the Acciona-Guella Joint Venture.
Implementation: February 2016–April 2021