Bengaluru Metro Blue Line
As of 16 Oct 2026, Bengaluru Metro Blue Line is under construction. Latest news: 16 Oct 2026.
The Bengaluru Metro Blue Line is a 58.19 km BMRCL corridor from Central Silk Board to Kempegowda International Airport via KR Puram and Hebbal, with 29 planned stations. As of October 2026 it is under construction. Trial runs on the 19.75 km Silk Board to KR Puram section (Phase 2A) are targeted from November 2026, with opening expected in 2027 and the full airport line by March 2028.
Why it matters
The Blue Line puts a metro on the Outer Ring Road, Bengaluru's busiest IT corridor, linking tech parks in Bellandur, Marathahalli and Doddanekundi with the Yellow, Purple and Pink lines. It is also the city's first rail link to Kempegowda International Airport, giving a fixed travel time in place of unpredictable road trips. At 58.19 km it is the longest single corridor in Namma Metro's Phase 2 programme.
Key facts
- Operator: Bangalore Metro Rail Corporation Limited (BMRCL)
- Length: 58.19 km, 29 stations
- Status (October 2026): Under construction as of October 2026. Phase 2A (Central Silk Board to KR Puram, 19.75 km) has most civil works done except signalling, with trial runs from Byappanahalli depot via KR Puram to Marathahalli targeted by 15 November 2026 and opening targeted for March to May 2027. Phase 2B (KR Puram to the airport, 38.44 km) is targeted in stages through 2027, with the full line now due by March 2028.
- Cost: ₹14,788.101 crore for Phase 2A and 2B (Union Cabinet approval, April 2021)
- Trains: BEML, six-coach standard-gauge trains, driverless-capable with Alstom CBTC signalling and platform screen doors; first train delivered June 2026
Bengaluru Metro Blue Line stations
The 29 stations below run from Central Silk Board to KIAL Terminals. Interchanges are listed where a station connects with another line or a railway station.
| # | Station | Type | Connects to |
|---|---|---|---|
| 1 | Central Silk Board | Elevated | Yellow Line |
| 2 | HSR Layout | Elevated | |
| 3 | Agara | Elevated | |
| 4 | Iblur | Elevated | |
| 5 | Bellandur | Elevated | |
| 6 | Kadubeesanahalli | Elevated | |
| 7 | Kodibeesanahalli | Elevated | |
| 8 | Marathahalli | Elevated | |
| 9 | ISRO | Elevated | |
| 10 | Doddanekundi | Elevated | |
| 11 | DRDO Sports Complex | Elevated | |
| 12 | Saraswathi Nagar | Elevated | |
| 13 | KR Puram | Elevated | Purple Line / Krishnarajapuram railway station |
| 14 | Kasturi Nagar | Elevated | |
| 15 | Horamavu | Elevated | |
| 16 | HRBR Layout | Elevated | |
| 17 | Kalyan Nagar | Elevated | |
| 18 | HBR Layout | Elevated | |
| 19 | Nagawara | Elevated | Pink Line (under construction) |
| 20 | Veerannapalya | Elevated | |
| 21 | Kempapura | Elevated | |
| 22 | Hebbal | Elevated | Orange Line (Phase 3, approved) |
| 23 | Kodigehalli | Elevated | |
| 24 | Jakkur Cross | Elevated | |
| 25 | Yelahanka | Elevated | |
| 26 | Bagalur Cross | Elevated | |
| 27 | Doddajala | Elevated | |
| 28 | Airport City | At-grade | |
| 29 | KIAL Terminals | Underground | Kempegowda International Airport |
Sections and opening dates
| Section | Stations | km | Status | Opened or expected |
|---|---|---|---|---|
| Central Silk Board to KR Puram | 13 | 19.75 | Under construction (Phase 2A), all works except signalling complete per BMRCL MD; Marathahalli and Silk Board ends still in progress | trial runs targeted from 15 November 2026; opening expected March to May 2027 |
| KR Puram to Hebbal | 9 | 11 | Under construction (Phase 2B), slowest section; Hebbal interchange works pending | expected late 2027 to early 2028 |
| Hebbal to KIAL Terminals | 7 | 27.44 | Under construction (Phase 2B) | expected September 2027 (revised August 2026); full line March 2028 |
Explore more
Official source: english.bmrc.co.in
Latest updates
34 tenders tracked →Phases
| Phase | Lines | Stations | Length (km) | Status |
|---|---|---|---|---|
| Central Silk Board to KR Puram | Central Silk Board to KR Puram | 13 | 19.75 | Under construction (Phase 2A), all works except signalling complete per BMRCL MD; Marathahalli and Silk Board ends still in progress |
| KR Puram to Hebbal | KR Puram to Hebbal | 9 | 11 | Under construction (Phase 2B), slowest section; Hebbal interchange works pending |
| Hebbal to KIAL Terminals | Hebbal to KIAL Terminals | 7 | 27.44 | Under construction (Phase 2B) |
Milestones
- Karnataka cabinet approves Phase 2A (Outer Ring Road line)
- Karnataka cabinet approves the revised Phase 2B airport alignment via Hebbal
- Union Cabinet approves Phase 2A and 2B, 58.19 km, at a completion cost of ₹14,788.101 crore
- Construction begins on Phase 2A
- NCC starts piling work on Phase 2B (airport line)
- Pier reinforcement cage collapse at HBR Layout; KR Puram to Hebbal work slowed for months
- BEML awarded rolling stock contract for the Blue Line
- Siemens and RVNL joint venture awarded electrification contract (about ₹762 crore)
- BEML delivers the first six-coach driverless-capable train for the Blue Line to Byappanahalli depot
- Karnataka government revises targets: full line to the airport by March 2028
- BMRCL says all Phase 2A works except signalling are done; trials to Marathahalli targeted by 15 November 2026, opening by May 2027
Frequently asked questions
What is the route of the Bengaluru Metro Blue Line?
It runs 58.19 km from Central Silk Board along the Outer Ring Road to KR Puram, then north via Nagawara and Hebbal to the Kempegowda International Airport terminals.
When will the Blue Line open?
Trial runs on the Silk Board to KR Puram section are targeted from November 2026 and that section is expected to open in 2027. The full line to the airport is now targeted for March 2028.
How many stations does the Blue Line have?
29 stations are planned: 13 on Phase 2A (Silk Board to KR Puram) and 16 on Phase 2B (KR Puram to the airport). The Bettahalasuru station was dropped after its private funder withdrew.
Where are the interchanges on the Blue Line?
Central Silk Board connects to the Yellow Line, KR Puram to the Purple Line and the railway station, Nagawara to the Pink Line and Hebbal to the planned Orange Line.
How much does the Blue Line cost?
The Union Cabinet approved Phase 2A and 2B together in April 2021 at a completion cost of ₹14,788.101 crore.
Will Blue Line trains be driverless?
BEML is building driverless-capable six-coach trains with CBTC signalling. BMRCL plans to keep train operators on board at first.
Journey Planner & Route Map
No tenders or contracts have been recorded for this project yet. New bids across India appear on the Tender Tracker.