Back on December 11, Karnataka government’s cabinet approved a 29.62 km extension of Bangalore Metro’s 21.43 km Gottigere – Nagawara Line-4 (Reach 6) to the Kempegowda International Airport. The extension is estimated to cost Rs. 5950 crores and will mostly run elevated, except near Yelahanka Air Force Station where it’s planned to run at-grade (or in a shallow tunnel) and within the airport’s premises where about 5 km will be underground.
Approved Funding Pattern
|Loan||3200 cr (54%)|
|Govt of KA||1250 cr (21%)|
|BIAL||1000 cr (17%)|
|Govt of India||500 cr (8%)|
Note – BIAL’s share will be funded by embarking flyers through a user development fee (UDF) between Rs 60-80 which will be included in the final air-fare. A proposal to levy this fee has already been sent to the central government and will need the Airport Economic Regulatory Authority’s approval. A similar fee was levied by DIAL in Delhi in the past and is currently in place by MIAL in Mumbai.
Civil & Technical Specs
• Stations: 7 at RK Hegde Nagar, Jakkur, Kogilu Cross, Chikkajala, Trumpet Interchange, Airport Cargo and Airport (most are likely to be renamed at a later time)
• Depot: 1 at Devanahalli on KIA land with 28 stabling lines, 4 inspection lines and 5 workshop lines
• Construction time: 30 months (civil) / 42 months (civil & subsystems)
• Trains: 6-coaches
• Signalling: Communications-Based Train Control (CBTC)
• Traction: 3rd Rail 750V DC
• Speed (max): 95 kmph
• Speed (avg): 60 kmph
• Conservative: 60,000
• Most Likely: 80,000
• Optimistic: 1,00,000
Here’s the general alignment of the line – see more details when it was finalized back in May 2017. The rough location of all 7 stations hasn’t been revealed yet. Their locations will be finalized only after a detailed design of the line is prepared.
The Deccan Herald has published an excerpt from the DPR which suggests the stations will be designed keeping future interchange connectivity in mind –
The DPR had an additional interesting element for future extensions, branching out from the approved Airport line with seven stations. An extract of the DPR reads, “The alignment from Nagawara goes northward up to RK Hegde nagar, where a junction is proposed in the future branching towards Bengaluru. However, the airport line would turn left, run along Jakkur Airport road, turn right to Bellary road operating between the National Highway and service road.” The second proposed addition is at trumpet interchange, where a junction is planned in the future, with provision to go towards Devanahalli. However, the Airport line takes a right, goes on the median of Airport Road up to the terminal building, the DPR stated.
The government hopes to complete land acquisition in the “next 3 months”, start construction in the next year (2019) and open the line by 2021. That of course is not possible, and the start of construction work will depend on a number of factors including the availability of funds, land acquisition (KA govt has in the past acquired some land along the highway), approval by the Government of India (for disbursing their share and for BMRCL to acquire an external loan), bidding process’ successful completion and the progress of Line-4’s underground section within the city which is currently stuck in the bidding stage.
For more updates, check out the Bangalore section of The Metro Rail Guy!