Thane Borivali Tunnel Current Status Today: Progress in Numbers

Searches for the Thane Borivali tunnel current status today usually return a list of events: a machine launched here, a family relocated there. That is useful, but it does not answer the question most Mumbai and Thane homebuyers are really asking in October 2026. Is the project on pace to open in May 2028, and if not, how far behind is it?

The best way to answer is with numbers. MMRDA publishes physical and financial progress figures for the 11.84 km twin tunnel. We at Godrej Properties MMR have set those figures against the 60-month contract that started in May 2023. The result is a clear picture of the pace so far, the pace now needed, and the milestones that could close the gap.

For a narrative history of every launch and clearance, our full milestone tracker covers it. This post sticks to the arithmetic.

Here are the numbers that define the project in October 2026. Each one comes from MMRDA’s project page or from published reports, and we have noted where figures conflict.

Some reports have swapped the two percentages, quoting 13.13% as physical progress. We rely on MMRDA’s own page, which lists 13.73% physical and 13.13% financial.

Between May 2023 and August 2026, about 39 months, the project recorded 13.73% physical progress. That is an average of roughly 0.35% a month. The early years were spent on approvals, land, shafts and machine procurement, so a slow start is normal for a tunnel of this size.

The remaining 86.27% now has to be completed in the time left. The table below shows the monthly pace needed for three possible end dates. These are simple averages and our own calculation.

A twelvefold jump sounds impossible, but tunnel projects do accelerate sharply once all machines are boring. The question is how sharply. With only two of four machines running and the Borivali shaft still under construction, our team does not expect the May 2028 pace to be met. The December 2028 and 2029 paces look far more achievable. Our three completion scenarios turn these figures into dated outcomes.

“Percentages lag reality in tunnelling. Shafts and machine assembly add little to the figure, but they unlock the months when progress climbs fastest.”

Twin tubes of 10.25 km each mean roughly 20.5 km of boring in total. Split across four machines, two from each end, that is about 5.1 km per machine. Large hard-rock TBMs in good basalt can sustain a few hundred metres a month once they settle in [VERIFY: not sourced, typical industry range]. At around 300 metres a month, a 5.1 km drive takes about 17 months.

That arithmetic explains why the Borivali launch matters so much. If TBM-03 and its partner start in mid-2027 and bore for 17 months, they finish in late 2028. Fit-out and safety testing follow, which points to an opening during 2029. If the Thane machines bore further than half way to make up time, the dates could improve. Our Thane Borivali tunnel status update covers TBM-03 and the Borivali shaft in detail.

There is also a gap between breakthrough and opening that the percentage does not capture well. After the drives meet, each tube still needs its final lining, road deck, drainage, ventilation fans, fire suppression, lighting, signage and a traffic control centre. Approach roads at Ekta Nagar and Tikuji-ni-Wadi have to be finished and connected to the Western Express Highway and Ghodbunder Road. Then come trial runs and safety certification. On large urban road tunnels, that systems phase commonly runs for several months [VERIFY: not sourced, typical industry range]. That is why our team treats the physical progress figure as a guide to when boring ends, not to when the first car drives through. When you read a headline percentage, ask which phase it is measuring.

You do not need to read every update. These five numbers tell you whether the project is catching up:

1. Physical progress. Above 20% by mid-2027 would show acceleration; under 17% would signal more slippage.
2. Machines boring. The jump from two to four is the single biggest change ahead.
3. Metres bored per machine. When MMRDA publishes drive lengths, compare them with the 5.1 km each machine must cover.
4. Financial progress. Spending usually tracks physical progress; a big gap can signal billing or contract issues.
5. Official completion date. Any formal change from May 2028 resets the market’s expectations.

For Godrej Properties Limited buyers on the Borivali side, the arithmetic is reassuring. godrej reserve kandivali has June 2030 possession, which sits after the base-case opening. Godrej Bliss Kandivali has November 2029 possession, broadly aligned with it. On the Thane side, the upcoming Ghodbunder Road township is near the Manpada portal. The developer’s full list of projects is on the Godrej Properties Limited website.

Investors who prefer projects not tied to a construction timeline often look at godrej city panvel in the airport belt, or at Pune options such as godrej infinity keshav nagar pune, godrej emerald waters pimpri and godrej serene. Among Mumbai’s luxury launches, Adani Bandra Reclamation and L&T The Gateway Sewri are built around infrastructure that is already open.

Q: What is the Thane Borivali tunnel current status today?

MMRDA reports 13.73% physical progress through August 2026 and 13.13% financial progress through July 2026. Two TBMs are boring from the Thane end, and the Borivali launch shaft is under construction.

Q: How many months are left on the contract?

The 60-month contract runs from May 2023 to May 2028. As of October 2026, about 41 months have passed and about 19 remain.

Q: What pace is needed to finish by May 2028?

About 4.1% physical progress a month from August 2026, roughly twelve times the average pace so far. For December 2028 the figure is about 3.1% a month, and for December 2029 about 2.2%.

Q: How much has been spent on the tunnel so far?

Financial progress was 13.13% through July 2026. Applied to the commonly reported Rs 14,401 crore cost, that suggests roughly Rs 1,890 crore, though MMRDA has not confirmed the exact base [VERIFY: not sourced].

Q: Why is progress so slow?

Most of 2023-2026 went on approvals, land clearance at Magathane, shafts and machine procurement. Boring only began in April 2026 at Thane, and the Borivali end has not started boring yet.

Q: Where can I see the official figures?

MMRDA’s Thane-Borivali twin tunnel project page publishes physical and financial progress. We also summarise changes in our tracker posts each quarter.

The Thane Borivali tunnel current status today, in numbers, is 13.73% done with about 19 contract months left. The pace now needed for May 2028 is roughly twelve times the pace so far, which is why our base case is a 2029 opening. Watch the Borivali machines and the quarterly percentage.

If you are planning a purchase near either portal, our team can match possession dates to these scenarios and arrange site visits. Our guide on the Borivali Thane tunnel completion date explains how to line the two up.