Delhi's Shiv Murti-Nelson Mandela Marg Tunnel Still in DPR Stage: Gadkari

• Delhi's proposed Shiv Murti-Nelson Mandela Marg Tunnel is still in the Detailed Project Report (DPR) stage.
• The 5km underground tunnel aims to connect Dhaula Kuan and IGI Airport-Gurugram, easing congestion on NH-48.
• Investment and implementation decisions depend on DPR findings, traffic density, and synergy with PM Gati Shakti National Master Plan.
• Estimated cost revised from Rs 2,000 crore to Rs 3,500 crore; completion by 2027 if work began in 2022.
• The project faces criticism for requiring cutting/transplanting over 400 trees and passing under the ecologically sensitive Southern Ridge.

Why It Matters: Future Delhi traffic relief hinges on this tunnel's uncertain approval.