S2 and S3 Tunnels, Itea

S2 and S3 Tunnels, National Road Lamia – Itea – Antirrio

Tunnel S2: single tube tunnel, 1 lane for each direction, 403m long Tunnel S3: single tube tunnel, 1 lane for each direction, 1958m long, with layby configurations, 2 escape pedestrian tunnels of 216m and 254m length respectively, and 1 escape vehicle tunnel of 336m length. This project comprises the Programme of Geotechnical Investigation, Geotechnical Evaluation and Geotechnical Design (at preliminary level): of the Entrance – Exit Portals and Cut & Covers of the motorway and escape (pedestrian and vehicle) tunnels, of Underground Excavation and Primary Support (NATM) of the motorway and escape (pedestrian and vehicle) tunnels.