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India’s First Undersea Railway Tunnel: Second TBM Begins Digging 21-Km Tunnel Beneath Thane Creek for Mumbai-Ahmedabad Bullet Train

Calender Jul 25, 2026
1 min read

India’s First Undersea Railway Tunnel: Second TBM Begins Digging 21-Km Tunnel Beneath Thane Creek for Mumbai-Ahmedabad Bullet Train

Travelling Under the Sea: India Reaches Major Milestone in Mumbai-Ahmedabad Bullet Train Project

India’s dream of high-speed undersea rail travel is rapidly becoming a reality. In a historic development for the country's infrastructure, the second Tunnel Boring Machine (TBM) has officially commenced digging India's first-ever undersea railway tunnel beneath Thane Creek in Maharashtra. This monumental engineering feat is a critical segment of the much-anticipated Mumbai-Ahmedabad High-Speed Rail (MAHSR) bullet train project.

Key Highlights of the Undersea Tunnel:

  • Historic Milestone: The excavation marks a major leap forward for India's first high-speed rail corridor, bringing cutting-edge subterranean and undersea engineering to the nation's transit network.

  • Massive Scale & Dimensions: The entire tunnel corridor will span a total length of 21 kilometers between Mumbai underground stations and Thane.

  • The Undersea Stretch: Out of the 21-km corridor, a continuous 7-kilometer stretch will run directly beneath the waters of Thane Creek, making it the first undersea rail tunnel in Indian history.

  • Boosting Connectivity: Once operational, the high-speed bullet train will drastically reduce travel time between India's financial capital, Mumbai, and Ahmedabad, setting a new benchmark for rapid inter-city transit.

This engineering marvel not only showcases India's growing technical prowess but also promises to transform the future of public transportation across the country.

Watch the full video report above for on-ground visuals of the tunnel boring operations! Would you be excited to travel underwater on India’s first bullet train? Share your thoughts in the comments below, and stay connected with VYGR News for continuous infrastructure and development updates.

 

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