Part of the ambitious 286 km long four-laning of the Jammu-Srinagar National Highway, the Chenani-Nashri Tunnel Project creates reliable all-weather connectivity between Chenani and Nashri — a section that otherwise remains closed for about 40 days a year due to bad weather conditions. It cuts down 31 kms of the Jammu-Srinagar distance and will reduce the elevation and hairpin bends associated with the existing highway.
Innovations and Impact
- The 9 km long two-lane, bidirectional tunnel is Southeast Asia’s first and longest state-of-the-art Intelligent Highway Tunnel. A transverse ventilation system ensures safety of tunnel users while the Fully Integrated Tunnel Control System manages and automates power supply, communication, fire-fighting and traffic control systems.
- The traditional wire-mesh system is replaced by Swellex rock bolts, and polyfibre/steel fibre shotcrete; support is optimized using deformation monitoring results. An automatic navigated boomer was used for the first time in India, with drilling up to 12 m advance at face of tunnel.
- The construction was designed to preserve the entire alpine forest ecosystem of Patnitop Ridge, which is of prime importance in terms of environmental conservation. Moreover, the project will not permanently convert the local natural forest into non-forest land.
- This tunnel is the fastest project to be completed in India's Himalayan region.
M/s New India Structures
The dedicated team of professionals brought their vast experience to the project construction.
M/s Beigh Construction Company
The leading Jammu and Kashmir-based general contractors who provided uncompromising services for the project
Savronik India Pvt Ltd
Savronik implemented the intelligent highway and tunnel control system for the project.
Ambuja have supplied 63 lakh bags of cement over 5 years at the CNTL project.
Suppliers of more than 15000 MT steel for the CNTL project.