01 Dec Attiko Metro U-Line 4 Posted at 11:27h in Buildings by andermanngroup 2023-OngoingClient:Avax S.A. & Obermeyer S.AProject: 12,8km of TBM & 15 StationsServices: NATM Tunnel Design for 2 Stations & 1 Shaft Design of Deep Excavation Retaining Systems for 2 Stations & 1 ShaftConstruction costs: 1150 M euro