Tag: Border roads organization

On this page, we shall keep you updated about all happenings, news, work progress, history, VIP visits and everything happening at Atal Rohtang Tunnel (Rohtang Tunnel) in Manali. Work on Atal Rohtang Tunnel, an 8.8km long engineering marvel connecting Manali with Lahaul on Manali-Leh highway, started on June 28, 2010 and it will be dedicated to the nation by Prime Minister Narendra Modi in September 2020. Timeline of sequence of events at Atal Rohtang Tunnel (now Atal Tunnel, Rohtang) Atal Tunnel Specifications Project Cost (As on 13 July, 2020): INR 3,500 Crore Length of Atal Tunnel: 8.8 KM Mountain Range: Pir Panjal Distance of tunnel from Manali: 25 KM Distance of tunnel from Keylong: 40 KM Distance of tunnel from Rohtang pass: 26 KM Shape of tunnel: Horseshoe Tunnel method: New Austria Tunneling Method (NATM) which uses drilling, blasting and digging Width of tunnel: 10m Altitude of the tunnel: 9,840ft to 10,170ft Tunnel designed for vehicular speed: 80 km per hour Temperature at south portal of Atal Tunnel at Dhundi: 28 degrees C (summers) to - 20 degrees C (winters) Temperature at north portal of Atal Tunnel near Sissu in Lahaul: 30 degrees C (summers) to - 30 degrees C (winters) Overburden: Maximum overburden (Pir Panjal mountain range) of 1,900m and average of over 600m Emergency escape route: An emergency tunnel (2.25m high and 3.6m wide) is running below the main carriageway/highway Vehicle capacity: 3,000 cars and 1,500 trucks Designed speed: Maximum speed of 80 km per hour and minimum speed of 30 km per hour. Features of Atal Tunnel The approach road to Atal tunnel is being secured by avalanche protection structures at avalanche-prone sites. Besides emergency exit tunnel below main tunnel, high efficiency fire sensing and extinguishing mechanism is being installed. A semi-transverse ventilation system. CCTV cameras being