Imagine getting off a sleek, air-conditioned train and walking through a futuristic, weather-proof tunnel to your office or a scenic seaside promenade. No navigating erratic traffic, braving the torrential Mumbai monsoons, and certainly no sweating. This is not a scene from a sci-fi film set in Tokyo; it is a bold new vision for Mumbai’s urban mobility.
The Mumbai Metro Rail Corporation (MMRC) has officially unveiled its ambitious plan to build a 3 km underground pedestrian tunnel network. This ambitious project is intended to serve as the “connective tissue” for the fully operational Metro 3 Aqua Line, making the transition from the station to the city’s most iconic hubs seamless, safe, and entirely subterranean.
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A High-Speed Link for BKC Professionals
The Bandra-Kurla Complex (BKC) will get a dedicated 1.4-kilometer pedestrian tunnel. This isn’t just any walkway; it’s designed to connect the BKC Metro station to the upcoming Mumbai-Ahmedabad High-Speed Rail (Bullet Train) terminal.
For the thousands of commuters who visit Mumbai’s premier financial district, this means an all-weather interchange. You can transition from a metro commute to a high-speed intercity journey without ever leaving the surface. This link is expected to significantly reduce “last-mile” traffic by bypassing the congested Tata Colony area and providing a direct, five-meter-wide corridor equipped with modern escalators and elevators.
Worli’s Subterranean Gateway to the Coast
While BKC focuses on business, the tunnels planned for Worli’s Science Centre station are about lifestyle and culture. MMRC has proposed two separate underground paths that will fundamentally alter how we experience the Worli seafront.
The first is a 1.1-kilometer tunnel that will run beneath the Mahalaxmi Racecourse, connecting the metro station directly to the Worli Promenade. This provides a safe, signal-free passage for both morning walkers and tourists, connecting the city’s heart to its western coastline. By moving pedestrian traffic underground, the project hopes to revitalise surface roads by reducing friction between speeding vehicles and pedestrians.
Reaching for the Stars at Nehru Planetarium
The second tunnel at the Science Centre station is a shorter, but equally important, 500-meter link that leads straight to the Nehru Planetarium. This particular corridor is a gift to the city’s cultural enthusiasts and students, who frequently find the walk from the main road to the planetarium difficult.
This underground network transforms the Worli Science Centre station into a multidirectional hub. Whether you’re going to a planetarium show, a jog by the sea, or a visit to the upcoming commercial developments on the old Worli Dairy site, these tunnels will get you there safely.
The Vision: A Tokyo-Style Pedestrian Grid
Transportation experts describe this as a “Tokyo-style” upgrade. Underground walkway networks in cities such as Tokyo and Toronto are thriving ecosystems brimming with retail shops and cafes. Mumbai’s plan foreshadows a similar future, utilising Transit-Oriented Development (TOD).
Under the new rules, developers of nearby buildings are encouraged to connect their properties directly to the tunnels. They receive an increased floor space index (FSI) in exchange for building these “vestibules” at their own expense. The city benefits from an estimated ₹250 crore infrastructure investment, while the metro gains “captive” ridership.
Safety, Accessibility, and The Road Ahead
Safety is central to this deep-level design. To prevent overcrowding, each tunnel will be roughly five meters wide and equipped with cutting-edge ventilation and lighting systems. Accessibility is also a priority, with lifts and escalators at each entry and exit point to assist the elderly and disabled.
While the Aqua Line is already transforming north-south travel, these tunnels—due for completion in 2029-30—are the final piece of the puzzle. They represent a shift in perspective, from simply moving trains to moving people.
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