Location: Varsavia, Polonia
Client: AGP (Astaldi, Gulermak)
Year: 2016 – ongoing

Since 2013 SGS has been involved in the extension works of Warsaw Metro Line 2. In particular, since 2016 SGS is responsible for the executive design of the mechanised excavation of 6 tunnel sections, 6 cross-passages and several ground improvement works. The use of TBM in EPB mode in soils often granular and below water table and the excavation beneath historical buildings in poor conditions have made such project complex and interesting.

A tight collaboration with the Contractor (Astaldi-Gulermak) and an efficient communication with the Client allowed to complete the works in time and with successful results. SGS is currently working on the design of the remaining sections of Line 2 tunnels whose construction is foreseen in 2020 and 2021.