Societá Italiana per Condotte D’Acqua S.p.A. has chosen Pöyry to carry out rock and tunnel engineering for the Follo Line in Oslo, Norway. Pöyry’s assignment includes most of the design needed for 5.5 km of tunnels close to the city centre of Oslo, 4 km of which is for high-speed train traffic.
The Follo Line connects Oslo with the city of Ski in the east-bound Follo district. The Follo Line tunnel system will be the longest in Norway with a total length of 20 km and a maximum train speed of 250 km/h. It will meet the increased demand for rail traffic capacity caused by the growing population in the greater Oslo area, and will serve an estimated 150,000 passengers daily after its completion by the end of 2021.
Condotte is the EPC contractor of the part that Pöyry is engineering, and the end client is the Norwegian National Rail Administration. The tunnel will be excavated using ‘Drill & Blast’ and ‘Drill & Split’ methods. All engineering will be carried out as Building Information Modelling (BIM). The project includes some unique challenges, such as the existing underground facilities and the relocation of the underground river Alna.
“This is the first large transportation engineering assignment we have won in Norway. Our experts in Norway and Finland are working jointly to tackle the challenges of the assignment in an innovative and reliable way that is characteristic to our work,” says Mikko Inkala, President of Infrastructure Design at Pöyry.
The value of the order is not disclosed. The order has been recognised within the Regional Operations order stock in Q1 2016.
Source: EPC Engineer