Mumbai-Ahmedabad Bullet Train Project: 293 Km Viaduct, 14 River Bridges Completed; 75% Excavation Done At Mumbai Station

Mumbai: The ambitious Mumbai-Ahmedabad Bullet Train project, covering a total distance of 508 kilometers—352 km in Gujarat and Dadra & Nagar Haveli, and 156 km in Maharashtra—has reached key construction milestones as of April 18, 2025.

Of the 12 planned stations, including Mumbai, Thane, Virar, and Ahmedabad, structural work for six of the eight stations in Gujarat has been completed. Viaduct construction now spans 293 km, while 375 km of pier work and 394 km of pier foundation have been completed. Girder casting has progressed to 320 km.

Fourteen major river bridges have been completed across districts like Valsad, Navsari, Kheda, and Vadodara. In addition, seven steel bridges and five PSC (pre-stressed concrete) bridges have also been constructed. Installation of noise barriers is ongoing in Gujarat, with around 3 lakh barriers installed along a 150 km stretch.

Track bed construction has reached 143 km in Gujarat, and welding of rails into long 200-meter panels on the viaduct is currently underway. Overhead equipment (OHE) mast installation is also progressing, with over 100 masts installed on the Surat-Bilimora segment.

Tunnel works are advancing, with the 21-km tunnel between BKC and Shilphata in Maharashtra under active construction. Approximately 3.3 km of tunnel heading has been achieved using the New Austrian Tunneling Method (NATM). The Vikhroli and Sawli shafts have reached depths of 56 meters and 39 meters respectively. In Palghar district, seven mountain tunnels are also under construction using NATM.

Construction on all three elevated stations has commenced. In Mumbai, about 75% of the 18.7 lakh cubic meter excavation at the Bullet Train station site has been completed. Base slab casting is in progress, with 25,000 cubic meters of concrete poured so far, out of a total of 200,000 cubic meters required.

Each casting involves 3,000–4,000 cubic meters of temperature-controlled concrete, produced onsite using in-situ batching and chiller plants. Additionally, all 3,384 secant piles have been installed at the Mumbai station site.

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