evidence: The Chenani – Nashri Tunnel (also known as Dr. Syama Prasad Mookerjee Tunnel) is India’s longest road tunnel completed in the Udhampur district of Jammu and Kashmir. The 9.2 km long road tunnel is a major road tunnel project in Northern India and the biggest of the country which includes (9 km Main Tunnel + 9 km Escape Tunnel + 1 km Cross Passage = total tunneling done is 19 km. The highest progress achieved in a Month from 4-Faces was 850 m which is a record in the Himalayan Tunnel by NATM. [...] - The construction cost of Chenani – Nashri Tunnel is Rs 3720 crore, the tunnel will reduce the distance between Jammu and Srinagar from 41 Km to 9.2 Km - 1500 Engineers, Geologist, Skilled workers and Labours worked on the project - 92.7 FM is mandatory for vehicles for quick response where emergency messages will be relayed - 6000 LED multiple color lights will be used to break the monotony - GSM phones will work inside the tunnel. 118 SOS boxes have been set up, one every 150 meters on both sides - Smoke and heat dampeners will react quickly in fire incidents or occurrence - 118 CCTVs, one every 75 meters - At 50 Km/hr speed, the tunnel is 12 minutes to 15 minutes drive - Each tube has a diameter of 13 meters, while sideway has a diameter of 6 meters - Rs.