Adani Group has emerged as the lowest bidder for both packages of the ambitious Bengaluru tunnel road project, marking a major development in the city’s infrastructure plans. The proposed underground corridor, stretching nearly 16.75 km, aims to connect Hebbal in north Bengaluru to Silk Board in the south to reduce traffic congestion on key routes.

Adani Group’s bids, however, are significantly higher than the government’s estimated project cost. While the state has projected a total cost of ₹17,698 crore, Adani Group has quoted around ₹22,267 crore for the full project. This difference is expected to push the matter to the Karnataka Cabinet for further review and approval.

The project will be executed under a build-operate-transfer model, with the government contributing 40 percent of the funding and the remaining amount to be arranged by the private concessionaire. After technical evaluation, only Adani Group and Vishwa Samudra Engineering qualified for financial bidding, leaving Adani as the lowest bidder overall.

Despite its scale and promise, the tunnel road project remains controversial, with legal challenges pending in multiple courts. If approvals move ahead smoothly, construction is expected to take around 50 months, with the tunnel likely becoming operational by the end of 2029.