An all-weather Tunnel connecting Leh region, Lahaul & Spiti Valleys and the rest of India across the Pir-Panjalranges where it
Two tramlines including a 3.2km underground section on Line 2, with four stations. The project team carried out 450 geotechnical
Four-lanes expressway spanning 259km with 98.8km of bridges and 38.4km of tunnels, costing $2.9bn Advanced design concepts and cutting-edge innovative
The first time in the world that a shallow-buried large-span tunnel protected by pipe-roof has been built beneath and operating