Phase II of the Chennai Metro Rail will cover an additional 93 km.

The extension of corridors 3, 4, and 5 to Kelambakkam, Parandur, and Avadi, respectively

In the upcoming years, the 118.9-km Phase II project of the Chennai Metro Rail is expected to add another 93 km, with the goal of extending it to Parandur, where a greenfield airport has been proposed.

Three corridors have been planned for the 61,843 crore Phase II project: Corridor 3, which covers the 45.8 km Madhavaram-Siruseri line, Corridor 4, which covers the 26.1 km Lighthouse and Poonamallee, and Corridor 5, which runs from Madhavaram to Sholinganallur (47.0 km).

Corridor 5 to Avadi via Thirumangalam and Mogappair (17 km), Corridor 4 to Parandur (50 km), and Corridor 3 from Siruseri to Kilambakkam Bus Terminus via Kelambakkam will all be extended (26 km).

According to CMRL officials, a consultant will soon be hired to conduct a thorough feasibility study for these extensions and submit a report with recommendations.

"To choose a consultant for these corridors, we recently floated a request for proposals. The consultant will review all of the current reports, including the development plans, comprehensive mobility plan, and current transportation routes. In a few months, the consultant will deliver a report to us, an official promised.

The report will cover a variety of topics, such as traffic congestion, peak-hour travel, projected travel demand for these corridors over the next 30 years, estimated construction costs, the need for both public and private funding, social and environmental impacts, and various other factors.

The Metro Rail will be extended from the Chennai airport to Kilambakkam, where a bus terminal will soon be built. The CMRL has provided the State government with a thorough project report. According to the sources, this line will allow commuters access to the bus terminus from a variety of locations.

After the major areas of the city are covered, the route to Parandur is likely to have fewer stations than the other stretches, according to the sources. The separation between stations will widen, and for the time being, only areas with high travel demand will be developed. Otherwise, stations can be built later if there is a need, the official said.