New Delhi: The Mumbai-Ahmedabad Bullet Train project has achieved another major milestone with the successful breakthrough of its third mountain tunnel in Maharashtra, marking rapid progress in one of the most challenging sections of India’s first high-speed rail corridor.
The tunnel, designated MT-07, has been completed at Ambesari village in Dahanu taluka of Palghar district. Measuring 417 metres in length and 14.4 metres in width, the tunnel is designed to accommodate both up and down tracks of the bullet train corridor.
Officials said the tunnel was excavated using a controlled drilling-and-blasting technique from both ends, supported by advanced monitoring and safety systems. Real-time surveillance through geotechnical instruments, strain gauges and seismographs was used to ensure structural stability and worker safety during construction.
The breakthrough is the third such achievement in Maharashtra within five months. Earlier, the 1.5-km-long MT-05 tunnel near Saphale was completed in January, followed by the breakthrough of the 454-metre MT-06 tunnel in February.
Of the eight mountain tunnels planned for the Mumbai-Ahmedabad Bullet Train project, seven are located in Maharashtra’s Palghar district and one in Gujarat’s Valsad district, where tunnelling work has already been completed.
Mumbai-Amdavad Bullet Train Project achieves another milestone 🇮🇳
🛤️ 3rd mountain tunnel breakthrough in Maharashtra within 5 months.
đź“ŤDahanu Taluka, Palghar pic.twitter.com/vhZcU4vgmP— Ashwini Vaishnaw (@AshwiniVaishnaw) June 2, 2026
Officials said construction is progressing steadily across the corridor, particularly in the industrial belt between Boisar in Maharashtra and Vapi in Gujarat. The project is expected to enhance India’s high-speed rail infrastructure and introduce advanced tunnelling and construction technologies to the country’s transport sector.
