Archive · 16 Dec 2025
Bengaluru's Grey Line Metro Progresses
Bengaluru is building a new metro line called the Grey Line, which will run from Hosahalli to Kadabagere.
This line is part of the Namma Metro’s Phase 3 expansion and will have nine stations.
The project is special because it has a double-decker design, meaning there will be a road, a flyover, and the metro line on top of each other.
This makes the construction more complex and slower.
The metro line is expected to start building in June 2026 and will take about five and a half years to finish.
The total cost is very high, with the metro line alone costing Rs 15,611 crore and the flyover costing Rs 9,700 crore.
The project has faced delays due to approvals and coordination issues, but once completed, it will help many people in western Bengaluru travel more easily.
The Grey Line Metro (Hosahalli–Kadabagere corridor) is part of Namma Metro’s Phase 3 expansion.
The 12.15 km elevated corridor will have nine stations and is expected to start construction in June 2026.
The double-decker design, which includes a road, a flyover, and the metro line, makes construction slower and more expensive.
The project is expected to take about five and a half years to complete and will cost Rs 15,611 crore for the metro line and Rs 9,700 crore for the flyover.
Delays have been caused by approvals, land acquisition, and coordination issues between government departments and private agencies.
- Who
- Bengaluru Metro Rail Corporation Limited (BMRCL)
- What
- Construction of the Grey Line Metro (Hosahalli–Kadabagere corridor)
- When
- Construction expected to start in June 2026, completion around 2032
- Where
- Bengaluru, India
- Why
- To improve connectivity and reduce dependence on buses and private vehicles
- Grey Line Metro
- 12.15 km elevated corridor from Hosahalli to Kadabagere
- Stations
- Hosahalli, KHB Colony, Kamakshipalya, Sumanahalli Cross, Sunkadakatte, Herohalli, Byadarahalli, Kamath Layout, Kadabagere
- Construction Start
- Expected in June 2026
- Completion Time
- Approximately 5.5 years after construction begins
- Project Cost
- Rs 15,611 crore for metro line, Rs 9,700 crore for flyover
- Construction Speed
- 3-5 km per year due to double-decker design
- Initial Metro Target
- 175 km by 2027, currently 96.1 km completed
- Approval Delays
- Clearances for tallest metro station and other elevated stations
Sources
Decongesting Bengaluru: Namma Metro, Blue & Pink Line, To Flyovers & Airport, Projects In The Works
Bengaluru Namma Metro Pink Line: Elevated Stretch By May, Full Line Targeted By End Of 2026
Grey Line Metro Work Begins: Full List Of Stations And Areas It Will Connect
