The Mumbai Metropolitan Region Development Authority (MMRDA) has begun preparing the DPR for a 70 km Integrated Tunnel Road Network, proposed as Mumbai’s next major mobility layer beneath the existing road and metro systems. Worth ₹1.05 trillion, the network will connect Mumbai Coastal Road, Bandra Kurla Complex High Speed Rail Station, and Chhatrapati Shivaji Maharaj International Airport.
Mumbai is imagining a new way to move; not above ground, but beneath it.
MMRDA’s proposed Integrated Tunnel Road Network will create a 70-kilometre system of underground corridors linking the Mumbai Coastal Road, BKC Bullet Train Terminal, and CSMIA Terminal 2, with future… pic.twitter.com/frt6dvM2xJ
— MMRDA (@MMRDAOfficial) November 9, 2025
Three-phase rollout based on traffic & future demand
MMRDA begins project report preparation for Mumbai’s Integrated Tunnel Road Network of 70 KM 👇🛣️
• 70 km network planned in 3 phases
• Phase I: Worli Sea Link – BKC – Airport Loop ( 16 km)
• Phase II: East–West Tunnel ( 10 km) – linking EEH and WEH
• Phase III: North–South… pic.twitter.com/VXKtp87xCG— Mehul R. Thakkar (@MehulThakkar_) November 9, 2025
The project will be executed in three stages.
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Phase 1: 16 km Worli Sea Link to BKC to Airport loop
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Phase 2: 10 km East-West Link
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Phase 3: 44 km North South Corridor
Approval for the consultant appointment was given on September 30. The tender was issued on October 10, a pre-bid meeting took place on October 17, and bid opening is scheduled for November 17.
The appointed consultant will review geological conditions, environmental impact and socio-economic factors, prepare tunnel designs, and support MMRDA with the bidding process. The DPR will determine overall feasibility before the project moves into construction.
Aim to decongest arterial roads
Once operational, the tunnel network will function as an underground expressway, diverting traffic from major surface routes and speeding up movement between major hubs including South Mumbai, BKC, and the airport. It will also ease pressure on the Western Express Highway and SV Road.
The corridors aim to strengthen east west and north south connectivity while supporting the city’s long-term ‘Mumbai in Minutes’ mobility vision.
