India, Nov. 13 -- Bengaluru's expensive and controversial tunnel road project has moved a step closer to reality, with four major infrastructure firms submitting bids to build it.

Bengaluru Smart Infrastructure Limited (B-SMILE), the agency in charge, confirmed receiving proposals from Rail Vikas Nigam Limited (RVNL), Adani Group, Vishwa Samudra Engineering, and Dilip Buildcon Limited, said a report by The Hindu.

The ambitious plan involves constructing a 16.74-km twin tunnel that will link Esteem Mall Junction in Hebbal to Central Silk Board Junction, aiming to ease traffic congestion along Bengaluru's north-south corridor. Karnataka Deputy Chief Minister DK Shivakumar has backed the project strongly, though it has faced opposition and...