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The Karnataka government is pushing ahead with a transformative infrastructure initiative for Bengaluru — a twin tunnel road project aimed at tackling the city’s chronic traffic congestion. Spearheaded by Deputy Chief Minister DK Shivakumar, the project envisions constructing two major underground corridors across the city in multiple phases.
So, what is the twin tunnel road project?
At its core, the project involves building two parallel underground tunnels (one for each direction) designed to handle heavy vehicular traffic and reduce surface congestion. The first tunnel will cover around 40 km from Hebbal Junction to Silk Board, while the second will run 23 km from Mysuru Road to KR Puram. Combined, these would form a crucial north-south and east-west subterranean grid across the city.
According to Shivakumar, the first phase will cost ₹17,000 crore and the second phase ₹23,000 crore. Tenders for the initial phase are expected to be finalised within days. The twin tunnels will likely be four-lane roads to accommodate Bengaluru’s traffic volume, requiring advanced tunnel boring machinery and considerable land for entry and exit points.
Also read: Bengaluru’s 16.75 km Hebbal-Silk Board tunnel to save 45+ minutes daily, says DCM Shivakumar
In addition to the tunnels, the plan includes:
- 130 km of double-decker flyovers and metro structures
- 300 km of road development along stormwater drains (rajakaluves)
Preliminary studies are being conducted in high-traffic corridors such as Bellary Road, Sarjapur Road, Hosur Road, Mekhri Circle, and KR Puram, to assess feasibility.
Shivakumar emphasised that such a massive project demands phased implementation and central support. The state has already approached Union Minister Nitin Gadkari to seek financial backing from the Centre.
If implemented as planned, the twin tunnel project could fundamentally reshape how Bengaluru moves — by shifting a significant portion of its traffic underground.
