ATAL TUNNEL : An Engineering Phenomenon

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Let’s begin with an  interesting topic today ATAL TUNNEL : An  Engineering Phenomenon”.

Points To Be Discussed

  1. Overview
  2. Facts About This Phenomenon
  3. Man Behind This Engineering Phenomenon


The world’s longest highway tunnel Atal Tunnel Situated at an altitude of three 10,000 metres from the mean water level  in Himachal Pradesh.

Aligning at a distance of about 9.02 km, this tunnel is an engineering phenomenon which connects Manali to the Lahaul-Spiti Valley throughout the year.

The Valley was earlier stop for 6 months annually due to heavy snowfall.

Built with ultra-modern stipulations within the Pir Panjal range of the Himalayas, this tunnel will reduces the distance between Manali and Leh by almost 46 kms and shorten the journeytime by four to 5 hours.

Vehicles are going to be ready to travel at a maximum speed of 80 kmph.

The tunnel also has facilities for a telephone every 150 m, fire hydrants every 60 m and emergency gates every 500 m.

There is a turning cave every 2.2 km and air quality monitoring systems throughout.

Broadcasting system and automatic incident detection system with CCTV cameras are key features located every 250 m.

Facts About This Phenomenon

The formation of this Tunnel  which took a span of 10 years.

The horseshoe shaped mono-tube, doubled-lane tunnel has many precursors.

It is country’s first tunnel to possess an escape tunnel within the most tunnel due to the topography.

This is also the primary tunnel to display the Rowa flyer technology, which allows engineers to work at inverted levels.

Here are some interesting facts:

  • The 9-km Atal Tunnel is made at an estimated cost of ₹3,500 crore..
  • The tunnel provides all-weather connectivity to remote border areas of Himachal Pradesh and Ladakh.
  • Atal Tunnel  not only important from the strategic point of view but also provides a boost to tourism in Lahaul-Spiti, creating employment opportunities.
  • It will also save crores of rupees in transport costs within the end of the day.
  • The tunnel has consumed 14,508 metric tones of steel and a couple of ,37,596 metric tonnes of cement.
  • Excavated out 14 lakh cubic metres soil and rocks, using the drill and blast technique for excavation.
  • The union government in December 2019 named the tunnel after late former prime minister Atal Bihari Vajpayee as a honor to him on his 95th birth anniversary.

Man Behind This Engineering Phenomenon

A key personality behind the timely construction of this engineering marvel, which took 10 years to finish (originally slated for completion in six years), was Kerala’s  Brigadier KP Purushothaman, a chief engineer with the Border Roads Organisation (BRO).

Here are 10 belongings you should realize this remarkable engineer:

  • A native of Echoor  village in Kerala, Brigadier Purushothaman holds a degree in engineering , besides a PG Diploma and MBA in construction management.
  • BRO chief engineer KP Purushothaman’s first job was within the remote Andaman and Nicobar Islands as an assistant executive engineer.
  • Besides his involvement within the construction of road projects bordering China and Pakistan.
  • In recognition of his work, he was awarded the Vishisht Seva Medal in 2019.
  • He refuses to require total credit for the project instead, on multiple occasions, he has paid tribute to the 3000 workers, 770 engineers, supervisors, consultants and contractors, who worked 24 hours each day.

I hope you found this post “ATAL TUNNEL : An  Engineering Phenomenon “.


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By KshitijUpalkar

Hello Everyone, My name is Kshitij Upalkar. I am currently pursuing my Bachelor's Degree in Civil Engineering from University Of Mumbai. Being fond of reading I have taken this initiative to give latest updates through my website.

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