Palghar, Maharashtra – The Mumbai-Ahmedabad High-Speed Rail corridor (MAHSR) achieved a significant engineering milestone as the second mountain tunnel breakthrough was successfully completed in Palghar district of Maharashtra. Union Minister Ashwini Vaishnaw announced the breakthrough on February 3, highlighting the rapid pace of work on India’s first bullet train project.
This development reinforces confidence in the project’s progress and marks a key step in building a state-of-the-art high-speed rail link connecting Mumbai and Ahmedabad.
The tunnel will play a crucial role in ensuring a fast, efficient and reliable bullet train corridor across western India.
What Is the Mumbai-Ahmedabad High-Speed Rail Project?
The Mumbai–Ahmedabad High-Speed Rail Corridor (MAHSR) is India’s first high-speed rail initiative designed to connect Mumbai (Maharashtra) with Ahmedabad (Gujarat) over a distance of about 508 km.
Once complete, the corridor will support trains running at speeds up to 320 km/h, significantly cutting travel time between two major economic hubs in western India.
Mumbai-Ahmedabad High-Speed Rail Project: Details of the Second Mountain Tunnel Breakthrough
The newly completed tunnel — known as Mountain Tunnel-6 (MT-6) — measures 454 metres in length and 14.4 metres in width. It is designed to carry both ‘up’ and ‘down’ bullet train tracks, ensuring high-speed connectivity through the mountainous terrain of Palghar.
This breakthrough marks the second mountain tunnel in Palghar completed within a single month. The first tunnel (MT-5) was successfully completed on 2 January 2026, underscoring the pace of construction.
Construction Technology and Safety
The breakthrough was achieved using the New Austrian Tunnelling Method (NATM) — a modern, drill-and-controlled blast technique ideal for complex geographic conditions where conventional tunnel boring machines are less effective.
This approach allows real-time adjustments and strengthens safety for workers through advanced geotechnical monitoring, ventilation systems, and controlled operations.
Government Statements & National Impact
Union Minister Ashwini Vaishnaw lauded the project team for their speed and engineering excellence. He noted that many advanced machines and technologies used in construction are manufactured in India, boosting domestic manufacturing and engineering capabilities.
The minister also reiterated projections that the Gujarat section of the MAHSR corridor could begin commercial operations next year, with the high-speed rail reaching Thane by 2028 and full Mumbai connectivity by 2029.
Regional Development and Broader Connectivity
Palghar’s rapid infrastructure development — including the MAHSR tunnel works, the Dedicated Freight Corridor (DFC), and the proposed Vadhvan Port — was highlighted by Member of Parliament Hemant Vishnu Savara, emphasizing the region’s strategic importance in transportation and economic growth.
Once operational, the Mumbai–Ahmedabad bullet train will not only offer world-class mobility but also boost trade, tourism, and industrial growth in western India.
