"The Prime Minister will inaugurate the Chenani-Nashri tunnel on JK highway on April 2," Union Minister of State in Prime Minister's Office(PMO), Jitendra Singh told PTI.
PM Modi will also address a public rally after the dedication the tunnel project to the nation, he said.
The work on the 9.2 km-long twin-tube tunnel, which is part of a 286-km-long four-lane project on the highway, started on May 23, 2011 in lower Himalayan mountain range, and cost Rs 3,720 crore, officials said.
The tunnel, which is located at an elevation of 1200 meters, will be the first in India to be equipped with world class "integrated tunnel control system" through which ventilation, fire control, signals, communication and electrical systems will be automatically actuated.
It will reduce the travel time between the two state capitals of Jammu and Srinagar by two-and-a-half hours.
The road distance from Chenani and Nashri will now be 10.9 km, instead of the existing 41 km, they said.
"The formal trial run was successfully completed for peak, off peak hours between March 9 and March 15," Project Director, IL&FS, JS Rathore said.
Once the tunnel becomes operational, it will reduce the traffic jams on National Highway-1A that occur due to snowfall and avalanches in winter at Patnitop, he said.
Travel will cost a Light Motor Vehicle vehicle Rs 55 on one side and Rs 85 for to-and-fro journey and Rs 1,870 for one month travel, while bigger vehicles like mini buses will have pay Rs 90 as one side toll and Rs 135 for to-and-fro toll.
Buses and trucks will have pay Rs 190 as one side toll and Rs 285 as two-side toll.
Mr Rathore informed that IL&FS Company has setup a well-equipped fully computerised operation room for surveillance of vehicles inside the twin tubes.
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