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)
October 23, 2020: Atal tunnel becomes major tourist spot
With thousands of people making beeline to the Atal tunnel (Rohtang tunnel) every day, it has become a major tourist destination of Kullu-Manali. Tourists — both from Himachal and other states — are traversing the tunnel and visiting Lahaul valley in a single day. The tunnel has also become a boon for tourism in Lahaul valley. The temples of Lahaul — Raja Ghepan of Sissu, Mrikula Mata and Trilokinath temple are witnessing heavy rush of visitors.
October 12, 2020: Atal Tunnel to remain closed in night time
Atal tunnel will remain closed from 9pm to 6am daily till December to facilitate laying of the 33KV power lines to Lahaul valley. The tunnel will also remain closed from 2pm to 3pm daily for maintenance purpose.
October 4, 2020: Tunnel to remain closed for fuel, inflammable materials
The Atal tunnel management has said that Atal tunnel will remain closed for petrol, diesel, LPG, explosive and all vehicles carrying inflammable materials.
October 03, 2020: PM Narendra Modi inaugurates tunnel
Prime Minister Narendra Modi dedicated the tunnel to the nation. He visited the entire tunnel and BRO officials briefed him about features of the tunnel. Modi was extremely happy to see this engineering marvel in the Himalayas. He congratulated all people of the nation. The tunnel is now open to general public.
October 02, 2020: Defence Minister Rajnath Singh visits tunnel
Defence minister Rajnath Singh visited the tunnel ahead of Prime Minister Narendra Modi’s visit. He inspected the tunnel and reviewed arrangements for inauguration of the tunnel.
September 23, 2020: Defence secretary & DGBR visits Atal tunnel
Defence secretary Ajay Kumar
inspected the safety, electro-mechanical devices and smart traffic management system in Atal tunnel, Rohtang, and gave some suggestions for improvement of the project in the future. He was accompanied by DGBR Lt Gen Harpal Singh. This visit was to take stock of preparations ahead of Prime Minister Narendra Modi’s visit to Atal Tunnel on October 3.
September 20, 2020: Modi to inaugurate Atal Tunnel on October 3
Himachal Tribal Development minister Dr Ram Lal Markanda said PMO has finalised the date of October 3, 2020 for inauguration of Atal Tunnel, Rohtang by PM Narendra Modi
. Minister said each village of Lahaul valley will celebrate fair on this historical day. A bus with elderly from the valley will be flagged off by Modi that will traverse the tunnel for the first time. Modi will then hold a public meeting at Sissu or Keylong.
September 15, 2020: Atal Tunnel completed at Rs 3,200 Crore
BRO officials discolosed that Atal Tunnel, Rohtang has completed for Rs 3,200 cr against the sanctioned cost of Rs 4,083cr.
September 13, 2020: Atal Tunnel Heroes honoured
Lahaul-Spiti Eco Tourism Society and Layul Utsav Society honoured Atal Tunnel heroes including BRO officials, Afcons engineers, security personnel, design engineers and others. The tribal residents shared their past experiences including how they convinced Atal Bihari Vajpayee to sanction Rohtang tunnel project. Elderly residents of Lahaul who contributed in getting this project sanctioned including son of Vajpayee’s late friend Arjun Gopal.
September 07, 2020: DGBR visits Atal tunnel
DGBR Lt Gen Harpal Singh again visited the tunnel to review ongoing works. In his two days-visit, he took stock of ongoing finishing works including paint and cleaning. Lighting work has finished. The entry gate to the tunnels near portals are also ready. DGBR then visited Shinkula pass to check progress of initial works to build a tunnel beneath the pass. The work on Shinkula tunnel is expected to start soon.
September 06, 2020: Defence minister may visit on Sept 9
Defence Minister Rajnath Singh is expected to visit Atal Tunnel, Rohtang on September 9 to take stock of the progress of the works in the tunnel. Director General Border Roads is expected to visit the tunnel before him on September 7.
September 04, 2020: Lighting and civil work finish, cleaning begins
BRO officials said civil works and lighting of the Atal tunnel, Rohtang have finished and they now final finishing and cleaning works are under way. BRO is assured of completing all the remaining works including finishing touch before inauguration of the tunnel by PM Narendra Modi. BRO and all stakeholders involved in making of the tunnel these days are busy in rehearsal to welcome Modi.
August 29, 2020: Complete tunnel work by Sept 15: CM
Chief minister Jai Ram Thakur again visited the Atal Tunnel, Rohtang to review the ongoing works. He inspected Sissu helipad in Lahaul where PM Narendra Modi is expected to land for the inauguration of the tunnel next month. He then visited the tunnel and its both the portals and had a meeting with BRO officials. He directed BRO officials to give final finishing to the tunnel by September 15. He said Atal Tunnel will start a new concept of “Tunnel Tourism
” in India as it will become a tourist puller for its uniqueness like longest tunnel of the world at 3,000m and being located at a beautiful place.
August 25, 2020: 100 m long bridge on approach road
August 23, 2020: Two police stations at Atal Tunnel
Two police stations
— one at North Portal and one at South portal of the Atal Rohtang Tunnel will be established for security reasons.
August 22, 2020: Atal Tunnel, Rohtang is now 9.02km long
August 22, 2020: DGBR visits tunnel
Director General Border Roads (DGBR) Lt Gen Harpal Singh visited the Atal Tunnel, Rohtang to review the work progress in the tunnel. This is his second visit to the tunnel in a month. As inauguration of the Atal Tunnel, Rohtang by Prime Minister Narendra Modi in September/October is nearing, officials are frequently visiting the tunnel. DGBR directed engineers regarding beautifucation of both portals of the tunnel.
August 11, 2020: Tunnel renamed as Atal Tunnel, Rohtang
Ministry of Defence (Border Roads) renamed Atal Tunnel as Atal Tunnel, Rohtang. This was done after demand of the people of Lahaul and Manali who had requested Defence Minister Rajnath Singh to rename tunnel as Atal Rohtang Tunnel. The residents say they have sentimental connections with Rohtang pass and wanted to include “Rohtang” to the name of the tunnel. Previously it was renamed from Rohtang tunnel to Atal Tunnel. Now it’s official name is Atal Tunnel, Rohtang.
July 24, 2020: DGBR's third visit in the year
Director General Border Roads (DGBR) Lt Gen Harpal Singh again visited the Atal Tunnel
on Friday to review the ongoing works that are close to completion. The DGBR was accompanied by the joint secretary (Border Roads Organization) from the Ministry of Defence Satish Singh.
July 19, 2020: Helipads at both ends of Atal Tunnel
Himachal government said it will build two helipads at both ends (portals) of the Atal Tunnel at Dhundi and near Gufa hotel. This will facilitate in conducting rescue operations and providing relief in case of emergency. Provision of budget from this will be made from Rs 711 crore Tribal Sub-plan for the current year.
July 12, 2020: ADGBR visits Atal Tunnel
Additional Director General Border Roads Anil Kumar visited both portals of the Atal Tunnel to take stock of the current work progress as Defence Minister Rajnath Singh is proposed to visit the tunnel on July 17.
July 2, 2020: CM visits tunnel
Chief minister Jai Ram Thakur on Thursday after visiting 8.8km-long Atal Tunnel said Prime Minister Narendra Modi will visit Manali to inaugurate the tunnel
in first week of September. CM first held a meeting with officials of Border Roads Organization (BRO) at Atal Tunnel headquarters near Solang valley and directed them to ensure completion of the pending works by end of August. He then visited the tunnel along with cabinet ministers Dr Ram Lal Markanda and Govind Thakur and took stock of the ongoing works in final stage.
June 16, 2020: DG again visits tunnel
Director General Border Roads
(DGBR) Lt Gen Harpal Singh has again visited Dhundi to review the ongoing works of Rohtang tunnel
on Tuesday. Almost all the civil works including flooring works in tunnel
have completed and electrical and some other mechanical works are expected to complete within three months. This is his first visit to the tunnel
after lockdown but second visit this year. Despite all odds of lockdown and keeping all works shut
for nearly a month, the final works inside the tunnel
are continuing on war footing to meet the deadline of September when PM Narendra Modi is expected to visit the tunnel
March 24, 2020: Works stopped amid Covid-19 crisis
The works on under-construction Atal Rohtang Tunnel, which will be inaugurated by PM Narendra Modi in September, have also been suspended as a preventive measure against Covid-19. An official said that the work will resume after improvement in the current situation.
February 27, 2020: Atal Tunnel closed till inauguration
Atal tunnel, which was proving a lifeline for the people in need in snow-bound Lahaul valley in winter months, has been closed completely for all kind of movement
, including for ambulances. The tunnel will now open in September after its inauguration by Prime Minister Narendra Modi. According to Rohtang tunnel project authority, the ambitious project is in its final stage and the tunnel has been closed due to ongoing full-width paving. The surfacing works will continue for a few months and no traffic movement including ambulances would be allowed to ensure quality work. The remaining electrical and mechanical works are also underway.
February 26, 2020: DGBR's visit to tunnel
As Prime Minister Narendra Modi will visit Manali for the inauguration of 8.8km-long Atal Rohtang tunnel by September this year, the Defence Ministry and PMO are closely monitoring the remaining works of the tunnel. On Wednesday, Director General Border Roads (DGBR) Lt Gen Harpal Singh visited the tunnel
and reviewed the ongoing works.
December 25, 2019: Rohtang Tunnel named as Atal Tunnel
As the nation paid tribute to former Prime Minister Atal Bihari Vajpayee on his 95th birth anniversary, chief minister Jai Ram Thakur with people of Manali organized a special puja and launched various government schemes in the name of Vajpayee. He, after a nod from the Centre, announced to name Rohtang Tunnel as Atal Tunnel
as a tribute to the Vajpayee as he was considered the man behind the tunnel who had conceived its idea long back.
October 4, 2019: September 2020 is new deadline
The 8.8km-long Rohtang tunnel
will be opened for general traffic movement by September 2020
will be opened for emergency purpose after October 31 this year, Rohtang tunnel
project chief engineer KP Purushothaman said on Friday.
September 24, 2019: DGBR visits Atal Tunnel
Amid Himachal government’s claim to open Rohtang tunnel for general traffic movement by December this year, the director general of Border Roads Organization (BRO) Lt Gen Harpal Singh reviewed the ongoing works of the tunnel on Tuesday.
June 6, 2019: DGBR visits tunnel
The director general of Border Roads Organization (BRO) Lt Gen Harpal Singh on Wednesday reviewed the ongoing works of Rohtang tunnel which has already missed its many deadlines.
April 21, 2019: Tunnel opened for Lahaul residents for election
Amidst threats to boycott the Lok Sabha election and to stage protest over unavailability of emergency helicopter service to snow-bound Lahaul, the under-construction 8.8km-long Rohtang tunnel was opened for tribals on Sunday. After getting a nod from the Ministry of Defence and election commission, nearly 450 persons traversed the tunnel to travel between Kullu and Lahaul.
November 16, 2018: DGBR visits Rohtang Tunnel
Border Roads Organization (BRO) director general Lt Gen Harpal Singh on Friday visited both the portals of under-construction 8.8km-long Rohtang tunnel to take stock of the ongoing works.
September 30, 2018: Over 5,000 evacuated through tunnel
Over 5,000 people including tourists
and workers who had stranded in Lahaul, Spiti and along Keylong-Leh highway were evacuated through Rohtang tunnel. Hundreds of vehicles were also evacuated through the tunnel.
July 27, 2018: CM use Atal tunnel to reach Lahaul
As Union minister for road transport, highways and shipping Nitin Gadkari’s programme to visit the Atal Tunnel
was cancelled due to inclement weather conditions, Himachal chief minister Jai Ram Thakur crossed 8.8km-long Atal Tunnel
attended a public meeting at Sissu in Lahaul, and returned back to Manali on the same day which would have otherwise taken two days by road via Rohtang pass. Realizing the dream of tribals of Lahaul to do both way journey to valley in one day after bypassing Rohtang pass
, CM became first non-emergency person to cross the tunnel
April 1, 2018: Workers go on indefinite strike
Already delayed by more than three years, the work of strategically important 8.8km-long Rohtang tunnel has been stopped by its workers who have resorted to indefinite strike since March 27, blaming tunnel project for ignoring labour laws. Over 500 workers engaged in different works at both portals of the tunnel have threatened not to resume the work until their demands are fulfilled.
March 18, 2018: DGBR visits Atal Tunnel
Strategically important 8.8km-long Rohtang tunnel will be devoted to the service of the country in time, director general border roads Lt Gen SK Shrivastava said. He visited under construction Rohtang tunnel on Sunday and took stock of the various works in progress.
October 25, 2017: 6.5 lakh KG explosives to make Atal tunnel reality
Country’s first hi-tech tunnel in most challenging geography saw a breakthrough after consuming whopping over 6.5 lakh kilogram of explosives that were used in New Austrian Tunneling Method (NATM), a BRO official informed.
October 15, 2017: Defence Minister visits Atal tunnel
Defence Minister Nirmala Sitharaman visited strategically important 8.8-km-long Atal Rohtang Tunnel today and entered the tunnel to take stock of various works undertaken by Border Roads Organization (BRO). Her visit was secret and she did not meet anybody due to model code of conduct coming into effect in Himachal Pradesh.
October 12, 2017: Rs 1,860 crore spent on project
As the Atal Rohtang Tunnel Project has achieved a breakthrough in the tunnel, Rs 1,860 crore have been spent on various works so far while the sanctioned project budget is Rs 4,035 crore, an official said.
October 11, 2017: Boring of Atal Tunnel completes
Boring of the Atal Tunnel has completed as breakthrough in the tunnel was achieved on Wednesday at 6:29pm. A final blast in the middle of the tunnel connected its both the ends. At above 10,000ft from sea level, Rohtang tunnel has officially become the longest tunnel of the country at this altitude. The tunnel has also proved most challenging project due to extreme weather conditions and tough terrains. The work on the tunnel had started on June 28, 2010 with expected completion time of five years. Geographical challenges delayed the project by four years. Despite tunneling continuing day and night from both the ends, digging of the tunnel completed after 87 months. The final finishing works, electrical and mechanical works will take two more years to complete.
September 2, 2017: Defence Ministry officials visit Atal Tunnel
Bharat Khera, joint secretary, air, ceremonial and border roads, visited south and north portals of Rohtang tunnel during his two days visit and he took stock of the work progress from both sides in Kullu and Lahaul valley.
July 26, 2017: Cloudburst washes away road
Cloudburst in Dhundi area in Manali washed away approach road to Rohtang tunnel at two places bringing the traffic movement on this highway to complete standstill.
June 22, 2017: ADGBR visits tunnel
PK Mahajan, Additional Director General Border Roads Organization, visited both portals of the Rohtang tunnel to take stock of the current work progress. He visited south portal of the tunnel at Dhundi on Wednesday and north portal of the tunnel today.
June 2, 2017: 850m tunneling remains
The breakthrough in strategically important 8.8km-long Rohtang tunnel (now Atal Tunnel) is expected to delay by a month or two as engineers still have nearly 850m tunnel to dig and the current excavation speed is about 6 metre a day.
November 14, 2016: Addl Defence Secretary visits Atal Tunnel
Additional secretary from defence ministry J Rama Krishna Rao took stock of the works in progress at both the portals of the Rohtang tunnel on Monday. The engineers briefed him in detail the various works being undertaken to speed up the work and assured him of breakthrough in tunnel by July next year.
November 4, 2016: Deputy DGBR visits tunnel
Deputy Director General Border Roads (headquarter), New Delhi, Anil Kumar visited both south and north portals of Rohtang tunnel on Friday to take stock of the progress of the tunnel works and suggested some ideas to speed up the work.
August 30, 2016: Bridge connecting tunnel collapsed
A 170ft-long bailey bridge over Chandra river that was built to provide access to under-construction Rohtang tunnel (Atal Tunnel) near Sissu village of Lahaul has collapsed on Monday evening when a supply truck was crossing over the bridge. Rohtang tunnel project chief engineer DN Bhatt said driver of the truck came out safely. Bridge has collapsed and its both piers have also been damaged partially. The bridge was connecting the north portal of tunnel with Manali-Leh highway where labour camps were established.
January 13, 2016: Seri Nullah fault zone done
About 650 metre loose strata section with huge water leakage was a challenge for engineers which delayed the excavation for over three years. Now this particular area, the Seri Nullah fault zone, has been excavated, and engineers have moved beyond it and digging process shall get good pace
November 12, 2015: Atal Tunnel to cost Rs 3,000 crore
Work to dig 8.8km-long Rohtang tunnel was started on June 28, 2010 and tunnel was expected to be ready for traffic by 2015. As many geological challenges are the reason that the project has been delayed by four years, the project cost has also increased. According to officials, Rs 1,200 crore have already been spent on the project and about Rs 1,800 crore are required to execute the remaining works and make the tunnel motorable by 2019.
November 6, 2015: Atal Tunnel's deadline slips to 2019
Director General Border Roads (DGBR) Lt Gen RM Mittal said Atal Tunnel (formerly known as Rohtang tunnel) will complete by 2019.
November 6, 2015: DGBR inaugurates bridge on Atal Tunnel approach road
Director General Border Roads (DGBR) Lt Gen RM Mittal inaugurated a 206 metre long bridge on connecting road to the south portal of the tunnel. The bridge is built at cost of Rs 10.56 crore with a technology that is used in the country for the first time. He said that engineers are now concentrating on building of 12 avalanche control structures on approach road to the tunnel before completing the excavation.
October 8, 2015: Strike by workers hit project hard
Complete strike by workers of Rohtang tunnel project has badly affected the work of this strategically important tunnel. Strike, which was called after a construction company engaged in tunneling work dismissed a worker, has entered 15th day. Tunnel is already expected to delay by three years and strike has brought all the works to complete standstill.
August 12, 2014: DGBR visits Atal Rohtang Tunnel
While Prime Minister Narendra Modi on Tuesday slammed Pakistan for continuing its terrorism activities and recalled the Kargil war during his visit to Ladakh, Border Roads Organization (BRO) director general Lt General AT Parnaik took stock of work progress in strategically important Rohtang tunnel and Manali-Leh highway.
March 9, 2014: Deadline increased by one more year
Completion time of strategically important Rohtang tunnel has increased by one more year. Engineers have accused the tough geographical and weather conditions of this delay. Tunneling was earlier to be finished by 2015 but now it will not be ready before 2017.
July 17, 2013: 3.5km boring done
With every inch engineers cut through the mighty Himalayas, engineering challenges in digging of strategically important 8.8-km-long under construction Rohtang tunnel are increasing due to unstoppable flow of water that is seeping at many places inside the tunnel. Despite this, 3.5km of the tunnel has been excavated and the work has been speeded up to meet the target of 2016. As on Wednesday, 2,000 meter tunnel is ready from south portal (Manali side) and 1,570 meter tunnel has been excavated from north portal in Lahaul.
December 21, 2012: DGBR visits tunnel
Amidst the tussle between nature and engineers of Rohtang tunnel, Director General Border Roads (DGBR) Lt Gen AT Parnaik visited south portal of tunnel and took stock of the development of work for the first time on Thursday.
November 18, 2012: Loss of 1.5km tunnel
Problems of engineers of strategically important Rohtang tunnel seem not to be ending soon as high water ingress and loose rocks have decreased the speed of digging the tunnel more than 10 times the normal since the last ten months. The natural challenges that the engineers are facing have pushed back the digging progress by 1.5km in last nine months.
August 23, 2012: Project likely to delay by one year
The Rohtang Tunnel (Atal Tunnel) project is expected to delay by one year. Austrian and Indian engineers are facing a new constraint. They cannot dig the tunnel more than a meter in a day. It has two reasons. The continuous water inflow—up to 35 liters per second – is not allowing them to chase their target. Loose-rock strata is another problem. Excessive digging of mixture of mud and rock may result in collapsing of the tunnel. All these factors have confined the excavation work to 0.5 meter excavation per day on average as compare to the 5 meter excavation in normal circumstances.
August 1, 2012: Digging reduced from 5m to 0.5m
The continuous and heavy water inflow inside the under-construction strategically important Rohtang tunnel (now Atal Tunnel) has lagged behind the work by over one precious month and the problems are expected to worsen after digging few more meters when main source of water (Seri rivulet) would flood into the tunnel. Speed of the excavation has reduced from 5m to 0.5m every day which is a real matter of concern for engineers.
June 7, 2012: DGBR visits tunnel
Director General Border Roads (DGBR) Lt Gen S Ravi Shankar on Thursday visited Manali and Lahaul to take stock of work progress on Rohtang tunnel and Manali-Sarchu highway. His visit was scheduled following heavy water seepage and loose rock material that badly affected the digging of the tunnel and BRO DG himself reached here to check the current conditions.
June 4, 2012: Water leakage and loose strata delay digging speed
Two years after the smooth digging of the mountain at an elevation of 10,170 feet, the tunneling now has turned into struggle as high volume seepage of water is all set to push back the engineers. Not just high water ingress but loose rock strata has slowed down the excavation speed. Boring of 2,750m tunnel is complete.
May 11, 2012: Strike for two weeks delay work
Strike by workers for two weeks delayed the project. Workers were convinced to return to the work.
February 17, 2012: 2,564m tunneling done
1,809 meter tunnel has been excavated from south portal and 755 meter from north portal in Lahaul valley, with total of 2,564m.
February 15, 2012: Engineers ready to face underground river
“We would pass by a river after the excavation of about 250 meters more. We shall come across under-ground flowing Seri Rivulet. However, digging the tunnel through rivers is common nowadays but this time we are doing this at an average height of 10,170 feet and sub-zero temperatures. Main challenge will be to prevent tunnel from flooding,” Rohtang tunnel project chief engineer PK Mahajan said.
September 10, 2011: High-tech machines from Germany
To speed up the digging of the tunnel, new high-tech machinery has been imported from Germany which has reached the tunnel site. The machines have been put into work.
September 9, 2011: 1,621 meter tunneling done
1,261 meter tunnel has been excavated from south portal in Manali and 360 meter has been dug from north portal in Lahaul. A total of 1,621m tunnel has been dug so far.
July 21, 2011: Cloudburst killed 3, some went missing
Three persons were killed, 22 injured while five went missing after flashflood triggered by cloudburst at MSP-7 near South portal of Rohtang Tunnel on intervening night of Wednesday and Thursday.
July 14, 2011: Workers go on strike
The workers of Rohtang Tunnel (Atal Tunnel) went on strike after alleging that company was not providing them with basic facilities which they deserved. Workers condemned the difference in treatment between employees of different origin and demanded equal treatment, timing for work inside tunnel and other facilities. The management lodged FIR against worker leader.
July 6, 2011: Work started from North Portal
After south portal of the tunnel at Dhundi in Manali, the digging of the tunnel has started from the north portal in Lahaul.
June 30, 2011: 1 KM tunneling done
Boring of about 1 km of the tunnel has been completed.
June 6, 2011: Western Command chief visits Atal Tunnel
In the wake of security threats across the border areas with Spiti and Ladakh, chief of western command reviewed the progress of
Rohtang tunnel on Monday. Lt general SR Ghosh, AVSM, SM, ADC, general officer commanding-in-chief of western command visited the Rohtang tunnel with other high-rank officers. About 1km tunnel has been excavated by now
and soon the work was going to begin from the north portal of the tunnel in Lahaul.
March 22, 2011: Avalanche kills two
Two persons were killed when a huge avalanche hit their jeep at MSP-5 on Solang-Rohtang tunnel highway on Tuesday morning. Both
were the employees of Strabag Afcons joint venture, the company that is main contractor for the construction of Rohtang highway tunnel.
Sept 28, 2010: Petrol Pump at Tunnel site
Indian Oil Corporation Ltd., the leader in the downstream petroleum business, installed ‘Strabag-Afcons Joint Venture Consumer Pump’ at south portal of strategically important Rohtang Tunnel Project in Dhundi, some 30 km north of Manali.
June 28, 2010: Sonia Gandhi lays foundation stone of Atal Tunnel
UPA chairperson Sonia Gandhi, in her capacity as National Advisory Council chief, laid foundation stone of the Rohtang tunnel (now Atal Tunnel) in presence of Defence Minister AK Antony, Himachal chief minister Prem Kumar Dhumal, Union Minister for Steel Virbhadra Singh and many other politicians and officials at Dhundi, about 25km north of Manali town. With this ceremony, digging of the Rohtang tunnel started from its south portal in Dhundi. This tunnel will bypass Rohtang tunnel, reducing travel time on Manali-Leh highway by about 46km. The tunnel will facilitate easy access of military to Ladakh
and will provide all-weather connectivity to Lahaul valley. The tunnel is expected to be completed at a cost of Rs 1,700 crore in five years.
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 placed at regular distance.
- Pollution monitoring system.
- Public announcement system (speakers).
- Telephone facility.
- High-efficiency automatic lights that will turn off automatically if no movement inside the tunnel. This will save energy.