Maharashtra Chief Minister Devendra Fadnavis on Thursday, 13 August announced that the Central Government has approved the manufacture of suburban local trains modelled on metro-rail standards, marking what he called a landmark day for the Mumbai Metropolitan Region's transportation network. Factories currently producing trains such as the Vande Bharat will now be repurposed to build automatic, air-conditioned, metro-style suburban coaches.

Metro-Grade Locals: What Changes for Commuters

Fadnavis said the stark contrast between clean, air-conditioned metro rides and the crowded, ageing suburban local experience will soon be a thing of the past. A total of 238 metro-grade suburban trains are slated for introduction by 2027, with the full suburban network transitioning to metro-style rolling stock by March 2030. Suburban trains currently carry 90 lakh passengers daily, while the expanding metro network is being built to serve an additional 70 lakh commuters.

Key Developments at the MMRDA Event

The announcements were made during a virtual event organised by the Mumbai Metropolitan Region Development Authority (MMRDA), which saw two major infrastructure milestones. First, Tunnel Boring Machine (TBM) 'Arjuna' was launched from the Thane side of the Thane–Borivali Twin Tunnel Project for the second tunnel bore, running parallel to the first bore already underway via TBM 'Nayak'. Two additional TBMs are expected to be deployed from the Borivali side shortly. Second, the flyover connecting BKC's G-Block to the Eastern Express Highway was formally named after freedom fighter and former Chief Minister Barrister Babasaheb Anantrao Bhosale.

Thane–Borivali Tunnel: National Record in the Making

The Thane–Borivali Twin Tunnel Project is set to feature India's longest underground highway tunnel, according to Fadnavis. The current 23 km road distance between Thane and Borivali will be cut to 11 km, with travel time expected to drop to just 12 to 15 minutes. Fadnavis said Maharashtra is setting a new national benchmark in infrastructure with this project.

BKC Connectivity and Western Mumbai Linkages

To permanently address traffic congestion around the Bandra-Kurla Complex (BKC), a plan to build connector roads was initiated in 2017–18, originally covering six routes and later expanded to eight. The inauguration of the final connector link completes this network, providing a major boost to connectivity between Eastern and Western Mumbai. The new elevated route from Bharat Nagar Road (University Campus) to Vakola Junction is designed to ensure seamless travel. Targeted measures, including underpasses on the Western Express Highway, will address potential bottlenecks near off-ramps. The newly inaugurated Chembur Metro Station is also expected to deliver critical transit integration for Mumbaikars.

Metro Expansion at Scale

The Chief Minister highlighted that 60 to 70 kilometres of new metro lines will be commissioned this year alone. This comes amid a broader push to modernise Mumbai's transit infrastructure, which has long struggled to keep pace with the city's population density. Notably, this is among the most ambitious single-year metro rollouts in India's history. With metro-grade locals, BKC connectors, and the twin tunnel all advancing simultaneously, Mumbai's infrastructure overhaul is moving on multiple fronts at once — though execution timelines in large urban projects have historically faced slippage.