Union Cabinet Approves ₹6,969.67 Crore Six-Lane Road Tunnel in Delhi
On July 1, 2026, the Union Cabinet approved an 8.1-km six-lane road tunnel project in Delhi connecting Dwarka Expressway with Nelson Mandela Marg in Vasant Kunj at an estimated cost of ₹6,969.67 crore. The tunnel includes a 3.14-km twin-tube section beneath the Southern Ridge Forest and will be constructed using Tunnel Boring Machine technology under the Hybrid Annuity Model (HAM). The project aims to reduce traffic congestion, improve connectivity between West and South Delhi, and integrate traffic from Gurugram, Dwarka, and the IGI Airport. Completion is expected within five years with significant employment generation.
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Key Facts
- Project length: 8.1 km six-lane road tunnel on NH-148AE in Delhi
- Connectivity: Links Dwarka Expressway with Nelson Mandela Marg, Vasant Kunj
- Structure details: 3.14 km twin-tube tunnel beneath Southern Ridge Forest, 0.98 km tunnel approach ramps, 0.554 km reinforced earth wall approaches, 2.556 km elevated sections, 0.87 km at-grade road, plus a flyover and elevated U-turn facility
- Estimated cost: ₹6,969.67 crore
- Implementation model: Hybrid Annuity Model (HAM)
- Technology: Tunnel Boring Machine (TBM) used for underground portion
- Completion timeframe: Approximately five years
- Employment generation: Approximately 7.54 lakh direct and 9.80 lakh indirect person-days
Background & Context
This tunnel addresses Delhi's urban mobility challenges by providing a faster corridor connecting West Delhi to South Delhi. The underground alignment through the environmentally sensitive Southern Ridge Forest minimizes surface disruption and preserves ecology. It also integrates with the proposed Barapullah elevated road, enhancing connectivity towards East Delhi, Ghaziabad, and Noida, benefiting commuters from Gurugram, Dwarka, and the IGI Airport.
Why This Matters for Exams
This project exemplifies India's infrastructure development using advanced technology and innovative financing through HAM. It highlights environmental considerations in urban infrastructure and strategic connectivity initiatives. Familiarity with NH-148AE, HAM, TBM technology, and key urban infrastructure projects is relevant for competitive exams.
Points to Remember
- Approved by Union Cabinet on July 1, 2026
- Connects Dwarka Expressway (NH-248BB) with Nelson Mandela Marg in Vasant Kunj
- Part of Delhi National Highway network NH-148AE
- 3.14 km tunnel constructed using TBM technology beneath Southern Ridge Forest
- Implemented via Hybrid Annuity Model
- Generates over 17 lakh person-days of employment (direct + indirect)
- Expected completion within five years
Sources & Further Reading
| Document / Website | Link |
|---|---|
| Union Cabinet approves ₹14,115 crore Delhi tunnel, UP highway projects to boost connectivity - BusinessToday | Open Union Cabinet approves ₹14,115 crore Delhi tunnel, UP highway projects to boost connectivity - BusinessToday ↗www.businesstoday.in |
| Cabinet Greenlights ₹6,969.67 Crore Six-Lane Tunnel to Enhance Connectivity in Delhi, ETInfra | Open Cabinet Greenlights ₹6,969.67 Crore Six-Lane Tunnel to Enhance Connectivity in Delhi, ETInfra ↗infra.economictimes.indiatimes.com |
| What is Hybrid Annuity Model (HAM) in Indian highways? | Open What is Hybrid Annuity Model (HAM) in Indian highways? ↗www.nhai.gov.in |
| Tunnel Boring Machines and their use in India | Open Tunnel Boring Machines and their use in India ↗www.nhai.gov.in |