Fact 🧞‍♂️

🧞‍♂️ SpotGenie Fact: Beneath the Waves, India’s First Underwater Road Tunnel

Hidden beneath the Arabian Sea lies India’s newest engineering marvel, a tunnel so deep, it redefines how Mumbai moves. But what makes this project truly special? Dive below the surface to discover the story of India’s first underwater road tunnel.

Pratik Kamble

28 Oct 2025 — 1 min read

SpotGenie Fact: Beneath the Waves, India’s First Underwater Road Tunnel

🌊 The Depths of Innovation

While most cities look skyward for progress, Mumbai went below the sea. As part of the ambitious Mumbai Coastal Road Project (South), India’s first-ever underwater road tunnel is now a reality, connecting Marine Drive to Worli.

Spanning 2.07 km, this modern-day engineering wonder was carved using TBM ‘Mavala’, India’s largest tunnel boring machine. Almost 1 km of the route runs directly beneath the Arabian Sea, making it the nation’s first undersea tunnel for road transport.

🛠️ Built to Withstand the Waves

Developed by the Brihanmumbai Municipal Corporation (BMC), this tunnel represents cutting-edge urban engineering:

Equipped with flood sensors, emergency escape passages, and automatic ventilation.
Designed to reduce travel time by nearly 70% between South Mumbai and Worli.
Built using waterproof concrete, marine-grade reinforcement, and AI-based monitoring systems.

When fully operational by late 2025, it’s set to become a benchmark for coastal city transport, offering a glimpse into how megacities can expand sustainably.

🌍 Why It Matters

This project isn’t just another piece of infrastructure, it’s a proof of resilience and innovation. Mumbai’s engineers literally dug through the sea to create more space on land.
From controlling tides to tunneling below seabed rock layers, the feat showcases India’s growing civil engineering might on a global stage.

💡 SpotGenie Insight

Just like Mumbai’s underwater tunnel makes hidden connections beneath the surface, SpotGenie helps connect vehicle owners instantly and safely, without revealing personal info. Whether it’s a parking alert or a roadside emergency, your Smart QR Sticker is your silent guardian on the road.
👉 Get your SpotGenie today and make your vehicle smarter than ever.