Four Double Shield TBMs, really tough gneis and water pressures of up to 12 bar – the Follo Line is undoubtedly a technical and logistical top-challenge in international tunnel construction. Smart engineering solutions, unshakeable willpower and mutual trust between all partners are necessary to make the ambitious hard rock project a success.
The Follo Line Project is a revolution for tunnel-rich Norway. For the largest infrastructure project in the land of the fjords, 4 tunnel boring machines are now being used simultaneously for the first time to build a new railway line between Oslo and Ski.
