Why Thane's bullet train station will sit 12 metres above ground

The National High Speed Rail Corporation Limited (NHSRCL) is constructing the Thane station for the Mumbai-Ahmedabad bullet train project at an elevated level, with the concourse planned approximately 12 metres above the natural ground. The design choice is driven by the presence of mangroves in the vicinity, making it distinct from conventional ground-level railway stations.

The station, located near the Ulhas River, will feature a roof inspired by the shape and movement of waves. NHSRCL stated that the elevated concourse is intended to minimise the station's impact on the surrounding eco-sensitive environment.

Thane station is part of the 135.45-km elevated section of the 508-km Mumbai-Ahmedabad High Speed Rail (MAHSR) corridor, which runs from Shilphata in Thane district to Zaroli village near the Maharashtra-Gujarat border. This section includes three elevated stations, with a large portion—about 124 km—being built as viaducts and bridges.

The Maharashtra leg traverses urban, hilly, and environmentally sensitive terrain. It includes seven mountain tunnels, three of which have already achieved breakthrough, with drainage, waterproofing, and lining work underway. Major river bridges are also being constructed, including a 460-metre bridge over the Ulhas River, a 2.32-km bridge over the Vaitarna River, and a 510-metre bridge over the Jagani River. The section will also feature 36 bridges and crossings, including 12 steel bridges over major railway lines and highways.

Construction is progressing rapidly, with pier work underway across more than 100 km of the section. Around 74 km of piers are ready to receive viaduct girders. To support the effort, nine casting yards, seven full-span launching gantries, and eight SBS launching gantries are operational in Maharashtra. Work at the Thane, Virar, and Boisar stations is also advancing as part of the elevated corridor.