Indian enterprise Navayuga Engineering company NEC has built one of the longest highway tunnels in India.

Quazigund to Banihal Highway project is one of the most critical projects for India as it ensures all-weather connectivity to north Kashmir through Pir Panjal Pass, a road prone to closure due to severe weather conditions. The tunnel will also shorten the distance between Srinagar and Jammu considerably. 

NEC was entrusted with the challenge of building one of India’s longest road tunnel that includes a 2-lane twin tunnel of 8.45 km each and 10 m in dia. This unique twin tunnel construction is strategic in a way that when an emergency arises, the military services can commandeer one tunnel, while civilians can use the other.

https://www.necltd.com/project-quazigund-banihal.html