This DH Report on 10/May notes: "The State government has long-term plans to build tunnel roads in the City to ease traffic congestion" said ..... Minister R Ashok on Monday.
Consider this against the effort spent reducing the length of Namma Metro Under Ground alignment.
Binny Mills to KG Bus Stand is one such tunnel road being discussed. Fortunately, "the proposals are in preliminary stage and nothing concrete has emerged so far, he said".
BTW, Namma metro's west bound UG alignment is not too far away!