Blue Line (Namma Metro)

Blue Line
Overview
Other name(s)	ORR East Line Airport Metro Line Central Silk Board - KIAL Terminals Line
Native name	ನೀಲಿ ಮಾರ್ಗ (Nīli mārga)
Owner	Bangalore Metro Rail Corporation Limited (BMRCL)
Locale	Bangalore, Karnataka, India
Termini	Central Silk Board KIAL Terminals
Connecting lines	Operational (2): Purple Line Yellow Line Upcoming (3): Red Line Pink Line Orange Line
Stations	13 (Phase-2A) + 16 (Phase-2B) = 29 03 (Phase-2B) - Future stations
Website	bmrc.co.in
Service
Type	Metro
System	Namma Metro
Depot(s)	Baiyappanahalli, Doddajala
History
Planned opening	Phase 2A - June 2026;10 months' time (2026-06) Phase 2B - December 2026;1 year's time (2026-12)
Technical
Line length	58.19 km (36.16 mi)
Number of tracks	2
Character	Elevated, At Grade
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Electrification	750 V DC third rail
Blue Line Map (TBC) Legend Yellow Line towards RV Road Central Silk Board Yellow Line HSR Layout Red Line towards Hebbala Agara Red Line Proposed Ibbaluru Red Line Proposed Red Line towards Sarjapura Bellandur Embassy TechVillage Kadubeesanahalli Kodibeesanahalli Marathahalli ISRO Indian Railways Towards Hosur and Banaswadi or Baiyyappanahalli Doddanekundi Bagmane Developers - DRDO Sports Complex Sarasvathi Nagara Krishnarajapura Purple Line Indian Railways Towards Krishnarajapuram and Yelahanka Jn or Bengaluru Cantt. Baiyappanahalli Depot (U/C) Kasturi Nagar Horamavu HRBR Layout Kalyan Nagar HBR Layout Nagawara Pink Line Under construction Veerannapalya Kempapura Orange Line Red Line towards Sarjapura Hebbala Red Line Planned Orange Line towards JP Nagar 4th Phase Kodigehalli Jakkur Cross Jakkur Plantation (no scope) Indian Railways Towards KSR Bengaluru and Yelahanka Jn Yelahanka Bagalur Cross Bettahalasuru (no scope) Chikkajala (future) Doddajala Indian Railways Towards Kolar and Yelahanka Jn Doddajala Depot (U/C) (at-grade) Airport City KIAL Terminals

The Blue Line is part of the Namma Metro rail network for the city of Bangalore, Karnataka, India. It consists of two sections - Phase-2A (Central Silk Board to Krishnarajapura) and Phase-2B (Krishnarajapura to Airport). Construction of Phase-2A began in August 2021. Construction of Phase-2B began in February 2022. The 58.19 km line connects Central Silk Board with the Kempegowda International Airport. The Line is mostly elevated but also has 2 at-grade (surface) sections, at the AFS Yelahanka Campus Bengaluru, and the airport. There are 30 stations on the line of which the two station/s at the Airport may be at surface level or underground. Blue Line will have interchanges with the Yellow Line at Central Silk Board, Purple Line at KR Pura, Pink Line at Nagawara and with the future /proposed Orange Line at Hebbal.

In June 2022, the BMRCL launched the first ever U Girder span on ORR-Airport metro line. ^{[1] [2] [3]} The extension of the Purple Line and construction of the Pink and Yellow Lines is currently in progress. The Pink, Yellow and Blue lines will be CBTC-signaling enabled, unlike Namma Metro's first two lines (Purple and Green lines use distance-signaling). In June 2023, the Deputy Chief Minister of Karnataka D. K. Shivakumar informed that Metro line to Kempegowda International Airport will be completed by June 2026, plus or minus 3 months. ^{[4] [5] [6] [7]}

History

The routes under Phase-2A and Phase-2B (Blue Line) were at first considered a part of the Phase-3 of metro development, but were prioritized under Phase-2, as the Central Government requested BMRCL to begin work on the airport link as early as February 2012. ^{[8] [9]}

The route from Central Silkboard to K R Puram along the eastern part of Outer Ring Road (ORR) was included as Phase-2A since development on that part of ORR had leap-frogged much ahead of the rest of the city with huge number of new office buildings. As a result, traffic increased several fold with employees traveling from different parts of the city to this new CBD. Chief Minister of Karnataka, Siddaramaiah announced in September 2016 that a new 18 km (11.2 mi) line connecting Central Silk Board with K.R.Puram along ORR would be included in Phase 2 as Phase-2A of the project at an estimated cost of ₹4202 crores. ^{[10] [11]}

Kempegowda International Airport (opened during May 2008) being very far from city center (about 35 km), commuting time by road in traffic congestion is time-consuming. Hence, attention for building a fast mass transit was in the minds of planners from the very beginning, especially since air traffic had kept increasing. The old airport in Bengaluru, the HAL Airport, located well within the city, had closed for commercial operations as part of the terms of the PPP for the new airport.

To connect airport to city, there had initially been a proposal to build a 33 km (21 mi) high speed rail line from MG Road to Kempegowda International Airport (KIA). Cost was estimated at ₹5,767 crore (US$810 million). This was to be executed by an independent SPV - Bangalore Airport Rail Link Limited (BARLL). ^[12] However, the plan for an exclusive city-airport high speed rail was canceled during October 2013 due to high cost and viability concerns. ^[13]

It was decided that BMRCL would manage the airport rail project and a regular metro line with fewer halts would be built instead of a high speed rail. Following this, suggestions were invited from public during September 2016 to choose any one of nine possible extension routes from existing and proposed metro lines to the airport. ^[14] The proposed extension routes had an average length of 30 km (19 mi), and cost estimates ranged between ₹4,500 crore and ₹7,000 crore. A 25.9 km (16.1 mi) extension from Nagawara via Kannur and Bagaluru was the shortest, while the 35.4 km (22.0 mi) extension from Yeshwanthpur via Yelahanka, Kannur and Bagaluru was the longest of the proposed routes. BMRC received 1,300 responses from the public. ^[15] The shortest (25.9 km, 16.1 mi) extension of the Kalena Agrahara (previously Gottigere) – Nagawara line via Kannur and Bagaluru to the airport emerged as the most popular choice. ^[16] In February 2017, the Centre requested BMRC to start work on the airport link before Phase 3. Thus, the Airport Line was included in Phase 2 as Phase 2B. ^[17]

Since the airport's managing company, Bengaluru International Airport Limited (BIAL) forbade underground construction from the southern side of the airport due to security concerns as it would have to pass beneath the airport's second runway, the shortest route options (i.e. extending the Pink line from Nagawara directly north) were eliminated. An alternate route proceeding north till RK Hegde Nagar and then turning west to Jakkur and then along Airport Road was explored. Bangalore Development Minister K. J. George announced on 12 May 2017 that the government had finalized the Nagawara—Ramakrishna Hegde Nagar—Jakkur—Yelahanka route to the airport. ^[18] However, this route had an obstacle as a high-pressure petroleum pipeline was passing through the originally proposed route. ^[19]

This was changed and on 10 January 2019, the State Cabinet approved a change in alignment for the proposed metro line to the airport. The new line would begin at Krishnarajapura (K.R. Puram) and be aligned along the northern part of ORR (Outer Ring road), passing Kasturinagar, Nagawara, Hebbal, and Jakkur before heading towards the airport. The line would be 38 km (23.6 mi) long, about 9 km (5.6 mi) longer than the route previously proposed, estimated to cost ₹10,584 crore (US$1.5 billion). ^[20]

Tendering

Blue Line
Pre-Construction Activity
Tendering	Section	Activity	Successful Bid /Cost	Contractor	Award
Phase-2A/ORR/2018/Demolition/DLN-9/35	Central Silk Board to K. R. Puram	Demolition	₹2.24 crore (US$260,000)	B R Chawla Demolition	12 Oct 2018
Phase-2A & 2B/Via & Stns /PMC/2020/72	Central Silk Board to KIAL	Project Management Consultant	₹20.58 crore (US$2.4 million)	RITES	17 Dec 2021
Phase-2A&2B/DDC/Sec-1	Central Silk Board - HBR Layout	Detailed Design Consultant	₹8.30 crore (US$980,000)	SMEC International	07 Feb 2020
Phase-2A&2B/DDC/Sec-2	HBR Layout - KIAL Airport	Detailed Design Consultant	₹6.26 crore (US$740,000)	AECOM – CEG JV	12 Feb 2020
Airport Depot & Byp Depot/DDC/2021/76	Baiyappanahalli & Airport Depot	Detailed Design Consultant	₹3.94 crore (US$470,000)	AECOM – CEG JV	16 Sept 2021
CE-US/ELE/EHV/ORR/PH-2A	Central Silk Board to K.R. Puram	Conversion of Electrical Lines	₹19.13 crore (US$2.3 million)	Rahul Cables	13 May 2022
Miscellaneous		KR Pura - KIAL Airport	₹9.27 crore (US$1.1 million)	Various	19 Dec 2020
Total			₹69.72 crore (US$8.2 million)
Civil Work
Tendering	Section	Length	Successful Bid /Cost	Contractor	Award
Package 2A/P1/60(a)	Central Silk Board - Kodibeesanahalli	9.859 km (6.126 mi)	₹785.25 crore (US$93 million)	Afcons	25 May 2021
Package 2A/P2/60(b)	Kodibeesanahalli - KR Pura	9.774 km (6.073 mi)	₹623.55 crore (US$74 million)	Shankaranarayana	25 May 2021
Package 2B/P2/69(a)	KR Pura - Kempapura	11.003 km (6.837 mi)	₹739.04 crore (US$87 million)	NCC	17 Nov 2021
Package 2B/P2/69(b)	Kempapura - Bagalur Cross	11.678 km (7.256 mi)	₹747.99 crore (US$88 million)	NCC	17 Nov 2021
Package 2B/P2/69(c)	Bagalur Cross - KIAL Terminals	15.011 km (9.327 mi)	₹680.21 crore (US$80 million)	NCC	17 Nov 2021
Veerannapalya Station [21]			₹35.74 crore (US$4.2 million)	URC Constructions	07 Feb 2025
Total		58.19 km (36.16 mi)	₹3,611.78 crore (US$430 million)
Depot Work
Tendering			Successful Bid /Cost	Contractor	Award
Remodelling Baiyappanahalli Depot			₹249.19 crore (US$29 million)	J Kumar – AICPL JV	18 Mar 2023
Airport Depot			₹182.39 crore (US$22 million)	J Kumar – AICPL JV	18 Mar 2023
Total			₹431.58 crore (US$51 million)
Architectural Finishing Works
Tendering			Successful Bid /Cost	Contractor	Award
Package 2A-A1	Central Silk Board - Kadubeesanahalli		₹65.58 crore (US$7.8 million)	MR Constructions	16 Dec 2024
Package 2A-A2	Kodibeesanahalli - KR Pura		₹66.78 crore (US$7.9 million)	Godrej & Boyce	09 Nov 2024
Phase-2B/Arch. Works/A2/RT/2025/136	Hebbal - Doddajala		Bidding Underway
Phase-2B/Arch. Works/A1/2025/129	Kasturi Nagar - Kempapura		Tenders under evaluation
Total			₹132.36 crore (US$16 million)
Miscellaneous
Tendering			Successful Bid /Cost	Contractor	Award
Land Acquisition			₹2,762 crore (US$330 million)	N/A	2020
Phase-2A and 2B/Plantations/2023/95	Plantation and Maintenance of Trees		₹7.29 crore (US$860,000)	Various	28 Mar 2023
Phase-2A and 2B/Track Work/2022/93	Ballastless Track Work		₹500.94 crore (US$59 million)	Larsen & Toubro	02 Jun 2023
5RS-DM	Rolling Stock (222 Coaches)		₹2,217.78 crore (US$260 million)	BEML	08 Aug 2023
Phase-2A & 2B/Turnouts /2023/101	Track Turnout		₹29.98 crore (US$3.5 million)	Vossloh	22 Mar 2024
EPC6-CC	Engineering, Supply, Erection, Testing and Commissioning of Power Supply		₹248.61 crore (US$29 million)	KEC International	10 Jun 2024
EPC5-CC	750V DC Third Rail electrification		₹764.64 crore (US$90 million)	Siemens – RVNL JV	11 Jun 2024
Signalling System (CBTC) & PSD			₹548.48 crore (US$65 million)	Alstom	12 Jun 2024
Phase II/ 9 ESCAL - DM	Elevators & Escalators		₹203.08 crore (US$24 million)	Johnson Lifts	6 Feb 2025
E&M-6	Electrical & Mechanical		₹197.04 crore (US$23 million)	Jakson	7 Feb 2025
Phase II/6 ELEV-DM	Machine Room Less Gearless Elevators		₹45.31 crore (US$5.4 million)		20 Mar 2025
Phase-2B/Arch. Works/A1/2025/129	Automatic Fare Collection System		Tenders Under Evaluation
Total			₹7,435.15 crore (US$880 million)
Total Line Cost			₹11,680.59 crore (US$1.4 billion)

Phase-2A

BMRCL prepared the detailed project report for the proposed Central Silk Board - KR Puram Line and submitted the DPR to the state government on 28 October 2016. Phase 2A was approved by the State Cabinet on 1 March 2017.

Tenders for the ORR (East) Metro line were called in February 2018 and IL&FS emerged the lowest bidder for all packages. However, the tenders were quashed due to cash flow problems and bankruptcy proceedings by the selected firm, IL&FS. A second round of tendering was done in December 2019. ^[22] The project cost was revised to ₹5994 crores. ^[22] Fresh bids were received by multiple firms in March 2020. ^{[23] [24]} There are two packages. The first package included 2.84 km of ramps for a flyover at Central Silk board junction in addition to 9.859 km of viaduct with six elevated stations. The second package was for 8.377 km viaduct with seven elevated stations, 1.097 km depot line and a 0.30 km pocket track.

Central government's approval was much delayed ^{[25] [26]} and finally received in April-2021. ^[27] Tenders were awarded in May-2021 and construction on Phase-2A finally began in August-2021. ^[28] Opening of this phase as per August 2022 from MD of BMRCL is expected around December 2026.

Phase-2B

Installation of U-Girders (Hebbala - KIAL Terminals stretch) under Blue Line of Namma Metro as of October 2024

DPR for the Airport Line had been prepared in September 2017 ^{[29] [30]} and cleared by Government of Karnataka in January 2019. ^[20]

Tenders for the Airport line were called in July 2020. There are three packages. The first package was for 11.003 km viaduct, including 281 mtrs viaduct beyond Phase-2A with eight elevated stations and 650 mtrs link line to Baiyyappanahalli depot. The second package was for 11.678 km viaduct with 250 mtrs pocket track and two elevated stations. The third package was for 15.011 km viaduct, including 718.18 mtrs cut and cover portion in front of Yelahanka Air Force Station. All three packages include road widening, utility diversion and allied works.

Bettadahalasuru station would be built by Embassy group at a cost of ₹140 crore. Kempegowda International Airport is likely to fund the construction of two airport stations off the highway. ^{[31] [32]} An MoU was signed between BMRC and KIAL for construction of the 4.95 km (3.08 mi) line and stations entailing an investment of ₹800 crore.

Central government's approval was delayed ^{[25] [26]} and finally received in April 2021. ^[27] Nagarjuna Construction Company (NCC) emerged as the lowest bidder to construct the line on September 16, 2021. Construction finally began in February 2022. Opening of this phase as per August 2022 from MD of BMRCL is expected around December 2025.

Veerannapalya Station was initially awarded to NCC as part of Package 2B/P2/69(a). However, due to a severe delay in shifting an underground gas pipeline the station was unloaded from NCC scope of work. BMRCL re-invited tenders for this station, which was later awarded to URC Constructions.

In January 2023, there was an accident when an reinforcement cage of the under-construction metro pier fell on a woman software engineer, Tejaswini Sulakhe and her son Vihan in HBR Layout, ^{[33] [34]} which led to their eventual death. ^{[35] [36]} BMRCL announced a financial assistance of ₹ 20 lakh. ^{[37] [38]} Chief Minister Basavaraj Bommai also announced a separate compensation of Rs 10 lakh for each of the deaths from the Chief Ministers’ Relief Fund. ^{[39] [40]}

Funding

In totality, the 58.19-km line consisting of both Phase 2A and 2B is estimated to cost ₹14,788 crores. ^{[41] [42]}

The Union and State governments will contribute ₹3,973 crore by way of equity and subordinate debt. Land acquisition costs, estimated at ₹2,762 crore, will be funded by the Government of Karnataka. BMRCL will raise the remaining amount of ₹5,960 crores through loans. In March 2021, it entered into a loan agreement with Japan International Cooperation Agency (JICA) for US$318 million (₹2,317 crore). BMRCL also raised US$500 million (₹3,643 crore) from the Asian Development Bank (ADB) to fund construction of the Blue Line (Phase 2A and 2B). ^{[43] [44]}

On June 10, 2024, Rail Vikas Nigam Ltd. (RVNL) disclosed in a BSE filing that its joint venture with Siemens has secured a contract worth approximately ₹762 crore from Bangalore Metro Rail Corporation. This contract encompasses the 750V DC third rail electrification work under package EPC5-CC for the 57 km Blue Line of the Namma Metro. ^[45]

Stations

The Blue Line will have 29 stations.

Interchanges

Passenger interchange facilities, connecting to other metro and railway lines, will be provided at the following stations:

• Central Silk Board (Connects to the Yellow Line, which runs between Rashtreeya Vidyalaya Road to Bommasandra)
• Agara (Connects to the Red Line, which runs between Hebbala to Sarjapura)
• Ibbaluru (Connects to the Red Line, which runs between Hebbala to Sarjapura)
• Krishnarajapura (Connects to the Purple Line, which runs between Whitefield (Kadugodi) to Challaghatta)
• Nagawara (Connects to the Pink Line, which runs between Nagawara and Kalena Agrahara)
• Kempapura (Connects to the Orange Line, which runs between JP Nagar 4th Phase and Kempapura)
• Hebbala (Connects to the Orange Line, which runs between JP Nagar 4th Phase and Kempapura and to the Red Line, which runs from Hebbala to Sarjapura)
• KIAL Terminals (Connects to the Kempegowda International Airport)

Blue Line
Phase-2A
#	Station Name		Expected Opening [46]	Connections	Station Layout	Platform Level Type
	English	Kannada
1	Central Silk Board	ಕೇಂದ್ರ ರೇಷ್ಮೆ ಮಂಡಳಿ	September 2026	Yellow Line	Elevated	Side
2	HSR Layout	ಎಚ್‌ ಎಸ್‌ ಆರ್ ಬಡಾವಣೆ	September 2026		Elevated	Side
3	Agara	ಅಗರ	September 2026	Red Line (Approved)	Elevated	Side
4	Ibbaluru	ಇಬ್ಬಲೂರು	September 2026	Red Line (Approved)	Elevated	Side
5	Bellanduru	ಬೆಳ್ಳಂದೂರು	September 2026		Elevated	Side
6	Kadubeesanahalli	ಕಾಡುಬೀಸನಹಳ್ಳಿ	September 2026		Elevated	Side
7	Kodibeesanahalli	ಕೋಡಿಬೀಸನಹಳ್ಳಿ	September 2026		Elevated	Side
8	Marathahalli	ಮಾರತಹಳ್ಳಿ	September 2026	Kanaka   (Under Construction)	Elevated	Side
9	ISRO	ಇಸ್ರೋ	September 2026		Elevated	Side
10	Doddanekundi	ದೊಡ್ಡನೆಕ್ಕುಂದಿ	September 2026		Elevated	Side
11	DRDO Sports Complex	ರ.ಸಂ.ಅ.ಸಂ. ಕ್ರೀಡಾ ಸಂಕೀರ್ಣ	September 2026		Elevated	Side
12	Saraswathi Nagar	ಸರಸ್ವತಿ ನಗರ	September 2026		Elevated	Side
13	Krishnarajapura	ಕೃಷ್ಣರಾಜಪುರ	September 2026	Purple Line Krishnarajapuram   Parijaata   (Approved)	Elevated	Side
Phase-2B
14	Kasturi Nagar	ಕಸ್ತೂರಿ ನಗರ	December 2026	Kanaka   (Under Construction)	Elevated	Side
15	Horamavu	ಹೊರಮಾವು	December 2026		Elevated	Side
16	HRBR Layout	ಎಚ್‌ ಆರ್‌ ಬಿ ಆರ್ ಬಡಾವಣೆ	December 2026		Elevated	Side
17	Kalyan Nagar	ಕಲ್ಯಾಣ ನಗರ	December 2026		Elevated	Side
18	HBR Layout	ಎಚ್‌ ಬಿ ಆರ್ ಬಡಾವಣೆ	December 2026		Elevated	Side
19	Nagawara	ನಾಗವಾರ	December 2026	Pink Line (Under Construction)	Elevated	Side & Island
20	Veerannapalya	ವೀರಣ್ಣಪಾಳ್ಯ	December 2026		Elevated	Side
21	Kempapura	ಕೆಂಪಾಪುರ	December 2026	Orange Line (Approved)	Elevated	Side
22	Hebbala	ಹೆಬ್ಬಾಳ	June 2026	Mallige   (Under Construction) Orange Line (Approved); Red Line (Approved)	Elevated	Side
23	Kodigehalli	ಕೊಡಿಗೇಹಳ್ಳಿ	June 2026		Elevated	Island
24	Jakkur Cross	ಜಕ್ಕೂರು ಕ್ರಾಸ್	June 2026		Elevated	Island
25	Yelahanka	ಯಲಹಂಕ	June 2026		Elevated	Island
26	Bagalur Cross	ಬಾಗಲೂರು ಕ್ರಾಸ್	June 2026		Elevated	Island
27	Doddajala	ದೊಡ್ಡಜಾಲ	June 2026		Elevated	Island
28	Airport City	ವಿಮಾನ ನಿಲ್ದಾಣ ನಗರ	June 2026	Airport City (Proposed)	At-Grade	Side
29	KIAL Terminals	ಕೆಂಪೇಗೌಡ ಅಂತಾರಾಷ್ಟ್ರೀಯ ವಿಮಾನ ನಿಲ್ದಾಣ	June 2026	Kempegowda International Airport   Sampige   (Under Construction)	Underground	Island

See also

• Namma Metro
  • Purple Line
  • Green Line
  • Yellow Line
  • Pink Line
  • Orange Line
  • Grey Line
  • Red Line
  • Inner Ring Line
• List of Namma Metro Stations
• Rapid transit in India
• List of metro systems

References

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2. "BMRCL launches U Girder for the first time on ORR-Airport metro line". The Hindu. 19 June 2022.
3. "BMRCL to switch to U-girders for ORR, KIA Metro lines". The Times of India. 16 September 2019.
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21. Veerannapalya Station was initially awarded to NCC as part of Package 2B/P2/69(a). However, due to a severe delay in shifting an underground gas pipeline the station was unloaded from NCC scope of work. BMRCL re-invited tenders for this station, which was later awarded to URC Constructions.
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32. "Embassy Group signs MoU with BMRCL for Bettahalasur Metro Station". Moneycontrol. 8 September 2020. Retrieved 10 September 2020.
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34. "'I wish I had died too': Husband recalls Bengaluru metro accident horror". 11 January 2023.
35. "Bengaluru metro structure falls; techie, kid killed". The Times of India. 11 January 2023.
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