Four Tunnel-Boring Machines Are About to Dig Under Satara Road. Here's Where That Project Actually Stands.

In May 2026, heavy machinery showed up on Satara Road. Not metro cars, not yet - a piling rig, boring a vertical shaft near Shankar Maharaj Math. That shaft is where a tunnel-boring machine will eventually be lowered underground. A second shaft is planned near Mukundnagar Chowk. Between the two, Maha Metro plans to run four TBMs - two starting from Swargate, two from Katraj - digging toward each other under one of Pune's busiest roads.

A few days later, on May 12-13, 2026, came the next visible milestone: casting of the first precast tunnel segments began, the concrete rings that will eventually line the bored tunnel. It's the kind of update that sounds incremental until you track how long it took to get here.

Five kilometres, five years, and counting

The Union Cabinet approved this extension - 5.46km of fully underground line from Swargate to Katraj - on August 16, 2024, sanctioning ₹2,954.53 crore with an original 2029 operational target. One Free Press Journal headline captured the public mood at the time better than any official statement could: "5 Years For 5 Kilometres."

Geotechnical survey work actually began even earlier, in May 2024, ahead of the formal Cabinet approval. The construction contract - ₹1,643.88 crore - went to ITD Cementation, part of the Adani Group, in October 2025. By mid-2026, the Maharashtra cabinet had also cleared an additional ₹683.11 crore for two new stations and a shifted Katraj station location.

The numbers that don't quite agree with each other

Track this project across enough reports and the cost keeps moving. The Cabinet's own sanctioned figure is ₹2,954.53 crore. Some later coverage puts the current estimate closer to ₹3,638-3,668 crore. An earlier DPR-era estimate, from before construction contracts were finalised, had cited ₹4,283 crore. None of these are necessarily wrong - they're measuring the project at different stages, with different scope - but taken together they're a fair warning against treating any single number here as final. The station count has moved too: early plans described three underground stations; current coverage describes five or six.

What this means if you live along Satara Road

A shaft going in near Shankar Maharaj Math and a TBM eventually boring beneath your commute is a multi-year disruption before it's a convenience. Surface traffic, parking, and the small daily errands that used to take ten minutes get harder along active construction zones like this one - which is exactly the kind of stretch where sharing a ride, or bundling a parcel into someone else's trip instead of making a separate one, saves more than the usual amount of hassle. The metro will eventually make this corridor easier. Right now, it's mostly making it narrower.

Photo: DesiBoy101, CC BY 4.0, via Wikimedia Commons.