Updates
Everything that has changed, newest first: developments on projects, corrections to our own records, and the notes from each quarterly re-check. Next quarterly re-check due January 2027. Subscribe: RSS · JSON
No quarterly re-check has been published yet. The first is due January 2027; its notes will say what changed and what couldn't be verified.
2026
Correction C1Purple Line extension: Mysuru Road – Challaghatta
Both are filed under fiscal year 2016-17, matching their approximate award date (October 2016). The amounts are unchanged.
Previously: The Reach 2A (₹327 cr) and Reach 2B (₹332 cr) civil-works contract values were filed under fiscal year 2021-22, the year of the article that reported them.
Raised by self-review; resolved using Metro Rail News
Correction C2Blue Line Phase 2A
No whole-project cost is on file yet. Both package contracts, and the combined Phase 2A+2B figure, are listed as part figures.
Previously: Latest cost ₹623.55 cr and originally sanctioned ₹785.24 cr, with an overrun of −20.6%. These were two different civil-works packages compared with each other.
Raised by self-review; resolved using The Metro Rail Guy
Correction C3Blue Line Phase 2B
No whole-project cost is on file yet. The depot contract is listed as a part figure.
Previously: Latest and originally sanctioned cost ₹182.33 cr, which is the Airport depot civil-works contract only.
Raised by self-review; resolved using Metro Rail News
Correction C4Cauvery Water Supply Scheme Stage 5
No whole-project cost is on file yet. Both JICA loans are listed as part figures.
Previously: Latest and originally sanctioned cost ₹4,336 cr, which is the JICA loan for Phase 3(I) only.
Raised by self-review; resolved using Japan International Cooperation Agency (JICA)
Correction C5Pink Line (Kalena Agrahara – Nagawara)
No whole-project cost is on file yet. Both Reach 6 contracts, the underground package and the trainset order are listed as part figures.
Previously: Latest and originally sanctioned cost ₹578.7 cr, which is the original Reach 6 elevated-section contract only.
Raised by self-review; resolved using The Metro Rail Guy
Correction C6Purple Line extension: Mysuru Road – Challaghatta
No whole-project cost is on file yet. Both reach contracts are listed as part figures.
Previously: Latest cost ₹332 cr and originally sanctioned ₹327 cr, with an overrun of +1.5%. These were the Reach 2B and Reach 2A contracts compared with each other.
Raised by self-review; resolved using Metro Rail News
SanctionedBMTC electric bus fleet (PM E-DRIVE) · BMTC
Karnataka Cabinet approved procurement of 4,500 electric buses for BMTC under the PM E-DRIVE scheme; state expenditure estimated at roughly ₹600 crore a year (~₹12,000 crore over 20 years), with a further ₹2,000 crore central loan sought for depot development.
Source: Urban Acres · news
Bid receivedBengaluru Business Corridor (Peripheral Ring Road) · BDA
Two firms — Shankara Narayana Constructions and Vishwa Samudra Engineering — submitted bids for Package 1 (Tumkur Road–Bellary Road, 19.80 km, ~₹3,348 cr).
Source: PropNewz · news
Tender floatedNamma Metro Phase 3 · BMRCL
BMRCL invited civil construction bids for the first 18.581 km of the Orange Line in three packages (JP Nagar 4th Phase–Kamakya, Hosekerehalli–Nagarbhavi Circle, Vinayaka Layout–BDA Complex Nagarbhavi), combined estimated cost ₹4,187.41 crore. Bid submission deadline 2026-02-25.
Source: The Metro Rail Guy · news
2025
Bid receivedHebbal–Silk Board Twin Tunnel Road · B-SMILE
Financial bids opened; Adani Group emerged lowest bidder (L1) at ₹22,267 crore against the government's ₹17,698 crore estimate.
Source: PropNewz · news
Cost revisedNamma Metro Phase 3A (Hebbal – Sarjapur) · BMRCL
Karnataka Cabinet approved a ₹2,920 crore cost reduction, bringing Phase 3A's estimated cost to ₹25,485 crore.
Source: Nativeplanet · news
SanctionedNamma Metro Phase 3 · BMRCL
Karnataka Cabinet approved the ₹9,700 crore double-decker viaduct component covering both Phase 3 corridors.
Source: The News Minute · news
Section openedYellow Line (RV Road – Bommasandra) · BMRCL
Yellow Line (RV Road–Bommasandra) inaugurated by the Prime Minister; commercial operations began the following day, 2025-08-11.
Source: Dainik Jagran (thedailyjagran.com) · news
Deadline revisedNamma Metro Phase 3 · BMRCL
Completion deadline pushed to May 2031 — reported as a year later than originally planned — citing delays in inviting civil work tenders for the double-decker flyover design; cost reported up about 5%. (Publication date approximate — exact date not confirmed.)
Deadline: May 2031
Source: Deccan Herald · news
2024
SanctionedNamma Metro Phase 3A (Hebbal – Sarjapur) · BMRCL
Karnataka Cabinet approved Phase 3A (Hebbal–Sarjapur, 36.59 km) at an estimated cost of ₹28,405 crore. (Exact day not confirmed — reported as "December 2024".)
Source: Nativeplanet · news
Section openedGreen Line extension: Nagasandra – Madavar · BMRCL
Nagasandra–Madavar extension became operational.
Source: The Metro Rail Guy · news
Section openedCauvery Water Supply Scheme Stage 5 · BWSSB
BWSSB commissioned Cauvery Stage V, bringing 775 MLD of additional water supply toward 110 villages within BBMP limits.
Source: Citizen Matters · news
SanctionedNamma Metro Phase 3 · BMRCL
Union Cabinet approved Phase 3 — 44.65 km, 31 stations, comprising the Orange Line (JP Nagar 4th Phase–Kempapura) and Grey Line (Hosahalli–Kadabagere).
Source: Construction World · news
2023
SanctionedBengaluru Suburban Rail Project · K-RIDE
KfW Development Bank signed a €500 million (₹4,552 crore) loan agreement, plus a €4.5 million grant, with K-RIDE to finance Corridors 1 and 3.
Source: Urban Transport News · news
Section openedPurple Line extension: Baiyyappanahalli – Whitefield · BMRCL
KR Pura–Whitefield section completed; the extension became fully operational (exact day not confirmed, month/year per The Metro Rail Guy).
Source: The Metro Rail Guy · news
Section openedPurple Line extension: Mysuru Road – Challaghatta · BMRCL
Kengeri–Challaghatta section completed; the extension became fully operational (exact day not confirmed, month/year per The Metro Rail Guy).
Source: The Metro Rail Guy · news
AwardedBlue Line Phase 2B · BMRCL
BMRCL awarded the ₹182.33 crore Airport Depot (Doddajala) civil works contract to a J Kumar Infraprojects–AIC Infrastructures joint venture.
Source: Metro Rail News · news
Section openedPurple Line extension: Baiyyappanahalli – Whitefield · BMRCL
Baiyyappanahalli–KR Pura section opened (exact day not confirmed, month/year per The Metro Rail Guy).
Source: The Metro Rail Guy · news
2022
SanctionedCauvery Water Supply Scheme Stage 5 · BWSSB
JICA signed a second ODA loan of JPY 37,068 million (reported as ≈₹2,391 crore) for Phase 3(II) water-supply and sewerage facilities.
Source: Japan International Cooperation Agency (JICA) · agency report
SanctionedBengaluru Business Corridor (Peripheral Ring Road) · BDA
Karnataka Cabinet approved the Peripheral Ring Road project at an estimated cost of ₹21,091 crore under a 50-year build-operate-transfer concession.
Source: Swarajya · news
2021
StalledBengaluru Business Corridor (Peripheral Ring Road) · BDA
Supreme Court order recorded that of the 1,810 acres 18.5 guntas notified for PRR Part 1, only 3 acres 21 guntas had actually been taken possession of; the Court directed the state government to hand over notified government land to BDA and directed BDA to simultaneously pass awards and take possession of notified land.
Source: Supreme Court of India (via Indian Kanoon) · agency report
Section openedPurple Line extension: Mysuru Road – Challaghatta · BMRCL
Mysuru Road–Kengeri section opened (exact day not confirmed, month/year per The Metro Rail Guy).
Source: The Metro Rail Guy · news
Bid receivedPink Line (Kalena Agrahara – Nagawara) · BMRCL
GR Infraprojects emerged lowest bidder among three qualified firms for the remaining Reach 6 work, at ₹364.87 crore.
Source: The Metro Rail Guy · news
AwardedBlue Line Phase 2A · BMRCL
BMRCL awarded both Phase 2A civil-works packages: ₹785.24 crore to Afcons Infrastructure (Package 1) and ₹623.55 crore to Shankaranarayana Constructions (Package 2).
Source: The Metro Rail Guy · news
StalledPink Line (Kalena Agrahara – Nagawara) · BMRCL
BMRCL terminated Simplex Infrastructures' ₹578.70 crore Reach 6 elevated-section contract citing poor progress — civil work had reached about 35-37% completion against a 27-month deadline that began in September 2017.
Source: The Metro Rail Guy · news
Section openedGreen Line extension: Yelachenahalli – Silk Institute · BMRCL
Yelachenahalli–Silk Institute extension inaugurated.
Source: The Metro Rail Guy · news
2020
SanctionedBengaluru Suburban Rail Project · K-RIDE
Central Government approved BSRP construction at a reduced cost of ₹15,767 crore, down from an earlier ₹18,621 crore estimate, with coach procurement shifted to a PPP leasing model.
Source: Swarajya · news
2019
AwardedPink Line (Kalena Agrahara – Nagawara) · BMRCL
ITD Cementation India was awarded the ₹1,771.25 crore underground civil works package covering Tannery Road, Venkateshpura, Arabic College and Nagawara stations (4.59 km).
Source: NBM&CW · news
2018
SanctionedCauvery Water Supply Scheme Stage 5 · BWSSB
JICA signed the first ODA loan agreement (Phase 3(I): JPY 81,060 million, of which JPY 45,000 million as tranche 1) for what BWSSB calls Cauvery Water Supply Scheme Stage V.
Source: Japan International Cooperation Agency (JICA) · agency report
2011
Section openedNamma Metro Phase 1 · BMRCL
Reach 1 (6.7 km, Mahatma Gandhi Road–Baiyappanahalli) opened to the public — Namma Metro's first operational stretch.
Source: The News Minute · news
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