Namma Metro Phase-3 Project: Feasibility Study For Double-Decker Metro Model May Stall Orange Line

Bengaluru's much-anticipated Namma Metro Phase-3 project, which aims to connect the Outer Ring Road, may face delays as the Bengaluru Metro Rail Corporation Limited (BMRCL) considers a new double-decker model. This innovative design would feature both a metro line and an elevated road, potentially easing the city's traffic woes.

Recently, the central government approved 44.65 km of the project with a budget of ₹15,611 crore. While this approval was a significant step forward, the Karnataka government is now evaluating potential upgrades. BMRCL has been tasked with developing 40.65 km of the project, and a feasibility study for the double-decker model has been commissioned to RV Associates. The study will assess the benefits and challenges of the model, with a report expected soon.

Following the success of the double-decker structure on the Yellow Line to Electronic City, BMRCL is exploring its expansion to future metro lines. This approach aims to reduce traffic and minimize land acquisition needs for road widening. Phase 3 will include a 29.20 km route from JP Nagar 4th Phase to Hebbal, an 11.45 km stretch from Hosahalli to Kadabagere, and an additional 14 km line between Sarjapur and Ibbaluru on the Outer Ring Road.

The feasibility study is also extending to additional sections, such as Agra and Koramangala 3rd Block, as part of Phase 3A, covering 2.45 km. Early estimates indicate that the double-decker model could cost ₹215 crore per km, with total expenses projected at around ₹8,000 crore. The feasibility report is expected to be submitted to BMRCL by December, after which funding and financial partnerships will be discussed, with BBMP anticipated to contribute additional funds.

Land acquisition costs are also expected to rise due to the double-decker system. Currently, 1,29,743 square meters of land is being acquired for the 32.15 km stretch from JP Nagar 4th Phase to Kempapur (Corridor-1). Similar acquisitions are ongoing for the Hosahalli to Kadabagere corridor, with BMRCL set to report to the Karnataka Industrial Areas Development Board (KIADB) for further action.

These factors are likely to drive up the overall costs of Namma Metro Phase-3 Project. Once the feasibility study is reviewed and funding is secured, the final approvals from state and central governments will be necessary before construction tenders can be issued, as noted by BMRCL officials.