The proposed extension of the Bengaluru Metro from Madavara (BIEC) to Tumakuru has moved closer to becoming a reality. The Bangalore Metro Rail Corporation Limited (BMRCL) has submitted the Detailed Project Report (DPR) for the project to Karnataka Home Minister G. Parameshwara.

Bengaluru Metro Corridor
The new metro corridor will cover nearly 60 km, making it one of the biggest metro expansion projects planned outside Bengaluru city limits. The proposed line will connect Madavara with Tumakuru through important towns such as Nelamangala, Dobbspet, and Kyathasandra. The project is expected to improve travel and connectivity between Bengaluru and nearby industrial and residential areas along the route. The DPR will now be presented before the Karnataka Cabinet for discussions and approval.
Key Features of Bengaluru Metro Proposal
One of the key features of the proposal is BMRCL's plan to develop the corridor through a Public-Private Partnership (PPP) model. The corporation has suggested using the Build-Operate-Transfer (BOT) system. Under this arrangement, a private company will design, finance, build, and operate the metro line for about 25 to 30 years. After this period, the control of the project will be handed back to the government.
According to the DPR, the BOT model has been chosen because it can combine private-sector efficiency with government oversight. Officials believe this method can help complete the project on time, within the planned budget, and with better operational standards.
BMRCL's Proposed Fundings
BMRCL has proposed two funding options for the project. Under the Special Purpose Vehicle (SPV) model, the estimated project cost is around Rs 17,785.69 crore. Under another PPP model based on Viability Gap Funding, the estimated cost rises to Rs 19,361.23 crore. Both the Central and Karnataka governments are expected to contribute financially.
The report also mentioned that private operators may ask for guaranteed returns of 16-18 per cent or minimum passenger guarantees because metro projects usually take a long time to become profitable. If the project gets approval, construction and implementation may take around four to five years.



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