Trevi has been appointed to carry out €90M (£79M) worth of ground engineering work for main contractor Salini Costruttori on phase 4 of Copenhagen’s Cityringen metro line.
The Cityringen project consists of twin bore 16km long tunnels, with 17 new stations, being driven by tunnel boring machine (TBM) at 30m below ground level. The project is technically challenging due to most of the city lying at sea level.
Trevi’s contract includes design and construction of the special foundations for the new stations on the metro, as well as soil consolidation work ahead of the TBM drives for the main tunnels. The company has said that it will be using advanced technology to deliver the project within the 36 month contract period.
Once complete in 2018, the fully automated Cityringen will operate 24 hours a day with a minimum frequency of 100 seconds between services. The Cityringen will mean that around 85% of Copenhagen’s homes, workplaces and institutions of higher education will be located within 600m of a Metro station or an S-train station.