India is getting ready for its first undersea train as part of the Mumbai-Ahmedabad High-Speed Rail corridor. The first phase of this project will start operations between Surat and Bilimora/Vapi on August 15, 2027. This high-speed network will connect Mumbai and Ahmedabad over a distance of 508 km with a design speed of 320 km/h.
What are the key features of the undersea tunnel and route?
The project includes a 21 km long underground tunnel from Bandra Kurla Complex (BKC) to Shilphata. A major part of this is a 7 km undersea rail tunnel that will run beneath the Thane Creek. To handle the terrain, over 300 km of viaducts (elevated tracks) have already been constructed, allowing the train to travel on high structures.
What is the cost and expected fare for the Bullet Train?
The total estimated cost of the entire project is approximately ₹1.08 lakh crore. While the official fares are not yet announced, the Railway Minister indicated that pricing will target the middle class. It is expected to be similar to the Rajdhani Express fares on the Mumbai-Ahmedabad route, ranging between ₹4,000 and ₹5,000.
What are the latest construction updates and partnerships?
On May 17, 2026, a 350-tonne Tunnel Boring Machine (TBM) with a 13.6-meter diameter was deployed in Vikhroli, Mumbai, to build the 21 km tunnel. The project is being implemented by the National High Speed Rail Corporation Limited (NHSRCL) with 81% funding from the Japan International Cooperation Agency (JICA). Domestic companies like Afcons Infrastructure, ICF, and BEML are involved in construction and coach manufacturing.
Frequently Asked Questions (FAQs)
When will the first phase of the Bullet Train start?
The first phase is scheduled to begin operations between Surat and Bilimora/Vapi on August 15, 2027.
How long is the undersea section of the tunnel?
The undersea rail tunnel will be 7 km long, passing under the Thane Creek as part of a larger 21 km underground section.
What is the expected travel time between Mumbai and Ahmedabad?
Once fully operational, the 508 km journey is expected to be completed in less than two hours at a speed of 320 km/h.