Chennani-Nashari Road Tunnel of Length 9 Km.

Construction of 9.0 km highway tunnel and escape tunnels using NATM method at Jammu & Kashmir, India

Location: Jammu & Kashmir

Project Name: Rehabilitation Strengthening and four Lanning of Chenani Nashri section of NH-1A including Construction of 9 Km long Road tunnel (2 lane) with parallel escape tunnel using NATM in the state of Jammu & Kashmir, India on DBFOT Basis.

Project Description:
• 9.0 km long main tunnel (Excavated Cross section: 140 sq.m.)
• 9.0 km long escape tunnel (Cross section: 80 sq.m.)
• 27 cross passages
• Reinforced Concrete for final lining
• Mixed Conditions with clay stone, sandstone, silt stone,
• Existence of fault zones
• Squeezing conditions at max. overburden.
• Longest road tunnel in India
• 2 milicum of underground excavation
• Bi-directional tunnel

Authority: National Highways Authority of India

Construction Cost: INR. 2700 Cr.

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