India’s longest highway tunnel in J&K is now open

India’s longest highway tunnel in J&K is now open

It’s the beginning of a new erea of road connectivity in the state of Jammu & Kashmir. Yesterday, the all-new 9 km-long Chenani-Nashri tunnel in Jammu & Kashmir, the longest highway tunnel in India, was officially inaugurated by prime minister Narendra Modi.

The twin-tube, all-weather tunnel between Udhampur and Ramban in Jammu & Kashmir is not only India’s longest highways tunnel but is also Asia’s longest bi-directional highways tunnel. Built at an elevation of 1,200 metres on one of the most difficult Himalayan terrain, the tunnel will cut the travel time between Jammu and Srinagar by two hours,  bypassing about 41km of road length. It will also ensure an all-weather passage on a route that often sees heavy traffic jams and disruptions due to landslides, snow, sharp curves, breakdown of vehicles and accidents.

The tunnel, which was constructed at a cost of about Rs 3,720 crore, is part of the 286km-long four-laning of the Jammu-Srinagar National Highway. The structure consists of a 9km-long, two-laned main tunnel with a parallel escape tunnel of same length. The two tunnels are connected by 29 cross-passages at regular intervals along the entire length of the tunnel. These cross passages can be used for evacuation of vehicles and commuters in case of breakdown or any other emergency. There are two minor bridges on the south and north sides and four-lane approach roads with toll plazas on both ends of the tunnel. The maximum height permitted in the tunnel is 5 metres and for checking the height special sensors have been installed just before the toll points at both ends. Read More…

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Credit By: AutoCar Professional

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