A tunnel boring machine named Arjuna broke ground on Thursday, 13 August 2026, as Maharashtra Chief Minister Devendra Fadnavis inaugurated a sweeping slate of infrastructure projects that promise to rewire how millions of Mumbaikars move through their city every day. From a new metro station in Chembur to a flyover renamed in honour of a forgotten former chief minister, the event staged by the Mumbai Metropolitan Region Development Authority (MMRDA) was among the most consequential single-day infrastructure rollouts the region has seen in years.

What opened, launched, and was named on August 13

The ceremony, held in Mumbai alongside Deputy Chief Minister Sunetra Pawar, covered four distinct milestones. Phase 2 of the Santacruz-Chembur Link Road (SCLR) — an east-west arterial corridor whose Phase 1 opened back in 2014 — was formally inaugurated, completing a connectivity spine designed to drain traffic from clogged central corridors. The Chembur Metro station, part of Metro Line 2B, Phase 1A, was also opened, adding another node to Mumbai's fast-expanding underground grid. The TBM 'Arjuna' was launched to begin boring the Thane-Borivali Twin Tunnel. And the BKC–Eastern Express Highway connector flyover was named after former Maharashtra Chief Minister Barrister Babasaheb Anantrao Bhosale.

The Thane-Borivali tunnel: 90 minutes to 12

The headline number from the day is stark: the Thane-Borivali Twin Tunnel, once complete, is projected to slash travel time between the two nodes from nearly 90 minutes to just 12–15 minutes. That is not a marginal improvement — it is a structural rerouting of daily life for hundreds of thousands of commuters who currently crawl through surface roads linking Mumbai's eastern and western suburbs. The TBM 'Arjuna' — named with a pointed nod to the Mahabharata's archer — is now the instrument of that promise.

Metro's expanding footprint and the 2027 train overhaul

Fadnavis stated that 60–70 km of metro network is expected to become operational this year, with the expanded grid projected to serve an additional 70 lakh passengers — figures that, if achieved, would materially ease pressure on Mumbai's legendary but strained suburban railway. The suburban rail story has its own timeline: new-generation automatic, air-conditioned trains are slated to begin arriving from 2027, with a full fleet replacement targeted by 2030. These are forward-looking commitments, and their realisation will depend on procurement and rollout progress.

Naming the flyover: Bhosale's legacy recalled

The renaming of the BKC connector flyover after Barrister Babasaheb Anantrao Bhosale gave the infrastructure event a historical dimension. Bhosale, a former Chief Minister of Maharashtra, is credited with championing girls' education, establishing the Chhatrapati Sambhajinagar Bench of the Bombay High Court, and carving out Gadchiroli as a separate district. Attaching his name to a flyover at one of Mumbai's most commercially dense intersections is a deliberate act of institutional memory — and a recurring feature of state infrastructure politics.

Ministers Mangal Prabhat Lodha, Girish Mahajan, Ashish Shelar, Minister of State Madhuri Misal, and members of the state legislature were present at the event.

Mumbai has waited decades for its infrastructure to catch up with its ambitions. With tunnels boring, metro lines multiplying, and new trains on order, the gap is finally, visibly, closing.