STN: The Tamil Nadu government has cleared two important projects that will add strength to the growing Chennai Metro network. With fresh approvals and funding, the city is moving closer to better metro connectivity for residents and future travelers.
Chennai Metro Phase II: Poonamallee to Sunguvarchatram Extension
The government has given the administrative sanction to extend the metro corridor from Poonamallee to Sunguvarchatram. Earlier, this line was planned between Lighthouse and Poonamallee. With the new decision, the alignment will now cover Sunguvarchatram as well.
This extension will run for 27.9 km and include 14 new stations. The project has been given an outlay of ₹2,126 crore. Out of this, around ₹1,836 crore will go toward land acquisition.
The Poonamallee–Sunguvarchatram stretch is part of a larger 52.94 km corridor. This longer corridor aims to connect Poonamallee with the proposed Parandur greenfield airport. The complete project is estimated to cost ₹15,906 crore.
The state government has directed Chennai Metro Rail Limited (CMRL) to begin preparatory works. These include land acquisition, road development, and other tasks to ensure smooth progress.
Chennai Metro Phase I: Airport to Kilambakkam Extension
This decision follows another approval given just a day earlier. On September 3, 2025, the Tamil Nadu government cleared the extension of Phase I from Chennai Airport to Kilambakkam.
This 15.5 km corridor will link the airport with the Kalaignar Centenary Bus Terminus at Kilambakkam. For this project, ₹1,964 crore has been set aside. The funds will be used for land acquisition, shifting of utilities, and related works.
Why These Extensions Matter
The new stretches of Chennai Metro will make travel easier across the city and beyond. The Poonamallee–Sunguvarchatram line will serve commuters heading toward the proposed airport at Parandur. The Airport–Kilambakkam line will give direct access to the bus terminus, improving connectivity for long-distance travelers.
Both projects highlight the state government’s focus on expanding metro infrastructure in Chennai. Once completed, they will reduce road traffic, cut travel time, and provide reliable public transport for thousands of daily users.
Next Steps
The immediate priority for CMRL is land acquisition and groundwork. These tasks are essential before construction can begin. Once completed, the extensions will become part of the larger metro grid designed to serve Chennai’s growing population.
FAQs About Chennai Metro Phase Extensions
A: Construction will begin after land acquisition and preparatory works are completed. The timeline depends on how quickly these steps are carried out.
A: The extension will include 14 metro stations over 27.9 km.
A: The longer corridor will eventually connect Poonamallee with the upcoming Parandur greenfield airport, making metro travel accessible for air passengers.
A: This 15.5 km stretch will connect Chennai Airport directly with the Kilambakkam bus terminus, helping passengers switch easily between air and bus travel.
A: Chennai Metro Rail Limited is responsible for carrying out land acquisition, groundwork, and the overall implementation of both extensions.
