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Source-backed construction dossier

Bengaluru Metro Blue Line (ORR-Airport Metro)

Bengaluru · Metro · Under construction · Bangalore Metro Rail Corporation Limited (BMRCL)

Last reviewed: 2026-07-17 · June 2026 reporting context; reported targets are not completion guarantees.

Cabinet-approved combined scope

58.19 km

Length source: Cabinet approves Bangalore Metro Rail Project Phase 2A and Phase 2B

Combined approval cost

₹14,788.101 crore

Cost source: Cabinet approves Bangalore Metro Rail Project Phase 2A and Phase 2B

Combined stations

30

Station source: India, ADB sign $500 million loan to expand Metro Rail Network in Bengaluru

Different source scope

The ADB loan release describes a differing 56 km scope for two new lines with 30 stations. It is shown as a source conflict/differing scope, not silently reconciled with the Cabinet's 58.19 km approval scope.

India, ADB sign $500 million loan to expand Metro Rail Network in Bengaluru

Claim ledger and evidence matrix

Nineteen accepted claims are shown in deterministic order. Classifications are written as text, and unknown fields remain explicitly unsupported.

Supported
6
Reported target
3
Differing source scope
1
Unknown
9
  1. Claim
    Combined Cabinet scope
    Value
    58.19 km
    Classification
    supported
    Scope or record
    Combined programme scope

    Source evidence

    Interpretation: Cabinet approval source supports the combined programme scope; it is kept separate from the differing ADB scope.

  2. Claim
    Cabinet approval cost
    Value
    ₹14,788.101 crore
    Classification
    supported
    Scope or record
    Combined programme approval

    Source evidence

    Interpretation: Cabinet approval source supports the combined approval cost.

  3. Claim
    Combined station count
    Value
    30
    Classification
    supported
    Scope or record
    Combined two-line programme scope

    Source evidence

    Interpretation: ADB source supports the combined two-line station count; phase-level counts remain unknown.

  4. Claim
    Differing ADB scope
    Value
    56 km
    Classification
    differing-source-scope
    Scope or record
    ADB loan source scope

    Source evidence

    Interpretation: ADB source describes a differing source scope; it is not reconciled with the Cabinet scope.

  5. Claim
    Phase 2A trial-run target
    Value
    October 2026
    Classification
    reported-target
    Scope or record
    Programme milestone — Minister Review Sets Phase 2A/2B Target Dates

    Source evidence

    Interpretation: Accepted milestone reports October 2026 as a target, not a completion guarantee.

  6. Claim
    Phase 2B Hebbal–Airport target
    Value
    June 2027
    Classification
    reported-target
    Scope or record
    Programme milestone — Minister Review Sets Phase 2A/2B Target Dates

    Source evidence

    Interpretation: Accepted milestone reports June 2027 as a target, not a completion guarantee.

  7. Claim
    Phase 2B KR Pura–Hebbal target
    Value
    December 2027
    Classification
    reported-target
    Scope or record
    Programme milestone — Minister Review Sets Phase 2A/2B Target Dates

    Source evidence

    Interpretation: Accepted milestone reports December 2027 as a target, not a completion guarantee.

  8. Claim
    Programme record support
    Value
    Supported
    Classification
    supported
    Scope or record
    parent · Bengaluru Metro Blue Line (ORR-Airport Metro)

    Source evidence

    Interpretation: The accepted programme record is retained in manual-entry order with all of its supporting source refs.

  9. Claim
    Phase 2A record support
    Value
    Supported
    Classification
    supported
    Scope or record
    phase2a · Bengaluru Metro Blue Line Phase 2A (Silk Board–K.R. Puram)

    Source evidence

    Interpretation: The accepted Phase 2A record is retained in manual-entry order with all of its supporting source refs.

  10. Claim
    Phase 2B record support
    Value
    Supported
    Classification
    supported
    Scope or record
    phase2b · Bengaluru Metro Blue Line Phase 2B (K.R. Puram–Airport via Hebbal)

    Source evidence

    Interpretation: The accepted Phase 2B record is retained in manual-entry order with all of its supporting source refs.

  11. Claim
    Phase-level length
    Value
    Unknown
    Classification
    unknown
    Scope or record
    Accepted packet known unknowns

    Source evidence

    No source link. The accepted packet does not support this field.

    Interpretation: The accepted packet does not support this field. Exact breakdown of 58.19 km into Phase 2A vs Phase 2B lengths is not cited in available sources. Individual phase lengths must not be invented.

  12. Claim
    Phase-level cost
    Value
    Unknown
    Classification
    unknown
    Scope or record
    Accepted packet known unknowns

    Source evidence

    No source link. The accepted packet does not support this field.

    Interpretation: The accepted packet does not support this field. Individual phase costs are not available from the allowed sources. Do not divide the combined Rs. 14,788.101 crore figure across phases without additional sourcing.

  13. Claim
    Phase-level station count
    Value
    Unknown
    Classification
    unknown
    Scope or record
    Accepted packet known unknowns

    Source evidence

    No source link. The accepted packet does not support this field.

    Interpretation: The accepted packet does not support this field. Station count of 30 is from the ADB loan release and refers to the combined two-line scope. Individual phase station counts are not available from allowed sources.

  14. Claim
    Packages
    Value
    Unknown
    Classification
    unknown
    Scope or record
    Accepted packet known unknowns

    Source evidence

    No source link. The accepted packet does not support this field.

    Interpretation: The accepted packet does not support this field. No package details, package codes, contractors, contract awards, or package-specific timelines are available from accepted sources.

  15. Claim
    Contractors
    Value
    Unknown
    Classification
    unknown
    Scope or record
    Accepted packet known unknowns

    Source evidence

    No source link. The accepted packet does not support this field.

    Interpretation: The accepted packet does not support this field. No package details, package codes, contractors, contract awards, or package-specific timelines are available from accepted sources.

  16. Claim
    Contract awards
    Value
    Unknown
    Classification
    unknown
    Scope or record
    Accepted packet known unknowns

    Source evidence

    No source link. The accepted packet does not support this field.

    Interpretation: The accepted packet does not support this field. No package details, package codes, contractors, contract awards, or package-specific timelines are available from accepted sources.

  17. Claim
    Current cost
    Value
    Unknown
    Classification
    unknown
    Scope or record
    Accepted packet known unknowns

    Source evidence

    No source link. The accepted packet does not support this field.

    Interpretation: The accepted packet does not support this field. Current cost escalation beyond the approved Rs. 14,788.101 crore is not available.

  18. Claim
    Construction start date
    Value
    Unknown
    Classification
    unknown
    Scope or record
    Accepted packet known unknowns

    Source evidence

    No source link. The accepted packet does not support this field.

    Interpretation: The accepted packet does not support this field. Neither construction start date nor guaranteed completion date for the overall programme or individual phases is available from the allowed sources.

  19. Claim
    Guaranteed completion date
    Value
    Unknown
    Classification
    unknown
    Scope or record
    Accepted packet known unknowns

    Source evidence

    No source link. The accepted packet does not support this field.

    Interpretation: The accepted packet does not support this field. Neither construction start date nor guaranteed completion date for the overall programme or individual phases is available from the allowed sources.

Programme hierarchy

  1. Parent programme

    Bengaluru Metro Blue Line (ORR-Airport Metro)

    The Blue Line is an under-construction metro corridor from Central Silk Board Junction to Kempegowda International Airport via K.R. Puram and Hebbal, implemented as Phase 2A and Phase 2B. The Union Cabinet approved the combined 58.19 km scope on 20 April 2021 at Rs. 14,788.101 crore, while the ADB loan release describes a 56 km loan scope. Secondary reporting of a June 2026 ministerial review—not an official BMRCL publication—reported target trial runs and section dates; all remain targets rather than guaranteed completion dates.

    Status: under construction · Operator: Bangalore Metro Rail Corporation Limited (BMRCL)

  2. Phase 2A

    Bengaluru Metro Blue Line Phase 2A (Silk Board–K.R. Puram)

    Phase 2A runs from Central Silk Board Junction to K.R. Puram. It was approved as part of the combined Cabinet scope, and the BMRCL executive summary identifies it as under implementation. Phase-specific length, cost and station totals remain unknown.

    Status: under construction · Operator: Bangalore Metro Rail Corporation Limited (BMRCL)

    Phase-level length, cost, and station totals: Unknown.

  3. Phase 2B

    Bengaluru Metro Blue Line Phase 2B (K.R. Puram–Airport via Hebbal)

    Phase 2B runs from K.R. Puram to Kempegowda International Airport via Hebbal Junction. It was approved as part of the combined Cabinet scope, the ADB loan supports the overall two-line programme, and the BMRCL executive summary identifies it as under implementation. Phase-specific values remain unknown.

    Status: under construction · Operator: Bangalore Metro Rail Corporation Limited (BMRCL)

    Phase-level length, cost, and station totals: Unknown.

Return to projects index.

Evidence and timeline

Every displayed claim resolves to the packet's accepted source index.

  1. Union Cabinet Approval (Phase 2A & 2B)2021-04-20 · achieved

    Cabinet approval covered the combined 58.19 km scope at Rs. 14,788.101 crore.

  2. ADB $500 Million Loan Signed2021-08-23 · achieved

    ADB loan source describes two lines totaling 56 km; this differs from the Cabinet approval scope.

  3. Under Implementation (BMRCL confirmed)Date not recorded · in-progress

    BMRCL Phase 3 DPR executive summary states Phase 2A and 2B are under implementation; no start date is claimed.

  4. Minister Review Sets Phase 2A/2B Target Dates2026-06-19 · in-progress

    Secondary reporting of the ministerial review described Phase 2A trial runs targeted from October 2026, Hebbal–Airport targeted for June 2027, and KR Pura–Hebbal targeted for December 2027. These are targets, not completion guarantees.

  5. Union Cabinet Approval (alongside Phase 2B)2021-04-20 · achieved

    Cabinet approval covers the combined Phase 2A and Phase 2B scope.

  6. Under Implementation (BMRCL confirmed)Date not recorded · in-progress

    BMRCL executive summary states Phase 2A is under implementation.

  7. Union Cabinet Approval (alongside Phase 2A)2021-04-20 · achieved

    Cabinet approval covers the combined Phase 2A and Phase 2B scope.

  8. ADB $500 Million Loan Signed2021-08-23 · achieved

    ADB loan supports the combined two-line programme; phase allocation is not claimed.

  9. Under Implementation (BMRCL confirmed)Date not recorded · in-progress

    BMRCL executive summary states Phase 2B is under implementation.

Accepted source index

Reported targets, not guarantees

Secondary reporting of the ministerial review described Phase 2A trial runs targeted from October 2026, Hebbal–Airport targeted for June 2027, and KR Pura–Hebbal targeted for December 2027. These are targets, not completion guarantees.

These are secondary-reporting targets, not guaranteed completion dates.

Known unknowns

The packet does not support phase-level length, cost, or station totals, current cost, a guaranteed completion date, a construction start date, packages, contractors, or contract awards. These fields remain Unknown.

  • Exact breakdown of 58.19 km into Phase 2A vs Phase 2B lengths is not cited in available sources. Individual phase lengths must not be invented.
  • Individual phase costs are not available from the allowed sources. Do not divide the combined Rs. 14,788.101 crore figure across phases without additional sourcing.
  • The PIB Cabinet approval cites 58.19 km total length, while the ADB loan press release cites 56 km. The values describe different source scopes or precision and remain unresolved.
  • Station count of 30 is from the ADB loan release and refers to the combined two-line scope. Individual phase station counts are not available from allowed sources.
  • Neither construction start date nor guaranteed completion date for the overall programme or individual phases is available from the allowed sources.
  • No package details, package codes, contractors, contract awards, or package-specific timelines are available from accepted sources.
  • Current cost escalation beyond the approved Rs. 14,788.101 crore is not available.
  • Original completion target as stated in approval or DPR is not available.

Bengaluru Metro Blue Line (ORR-Airport Metro) is derived from the accepted manual-entry packet. It does not claim phase-level values or live construction progress; the accepted source index and field limitations are shown above.