An elevated corridor linking the airport and Perungalathur which is part of the larger elevated corridor connecting airport and Chengalpet is likely to be integrated with the extension of the metro line from airport to Kilambakkam.
The Chennai metro rail limited (CMRL) had sought from the Chennai metropolitan development authority (CMDA), the feasibility study report on the massive infrastructure project recently. A consultant appointed by the CMDA conducted the study and estimated that the total cost for the project from airport to Chengalpet would be Rs 2,700 crore.
The metro rail is being extended from airport to Kilambakkam where the CMDA is constructing a mofussil bus terminus. Under such circumstances, the elevated corridor cannot take shape and will be further delayed. The final report of the feasibility study by the CMDA had suggested that construction of the around 40 kilometre-long elevated corridor could be bifurcated. While the state government can construct the elevated structure from airport to Perungalathur covering a distance of nine kilometres, the National Highways Authority of India can execute the rest between Perungalathur and Chengalpet. The scope of the feasibility study includes land requirement, alignment and number of metro stations required.