The Norwegian National Rail Administration also chose to highlight one contract that calls for the first use of drill and split in Norway. One of five EPC contracts for the line, the drill and split works will be used to cross existing sensitive infrastructure including the Ekeberg Oil Depot and also existing tunnels. Works on this section will be carried out by Italian construction company Società per Condotte d´Acqua, which was awarded the contract in February.

The Follo Line Project is currently Norway´s largest transport project. The project includes a 22 kilometer-long new double track line between Oslo Central Station and the public transport hub at Ski, a 20km-long railway tunnel (twin bore), extensive works at Oslo Central Station, construction of a new station at Ski and necessary realignment of the existing inbound Østfold line. The Follo Line is scheduled for completion in the end of 2021, and forms the core part of the InterCity development southwards from Oslo.