Chennai Metro Phase 2 is an expansion project by Chennai Metro Rail Corporation (CMRL) with a total length of 118.9 kilometers, 128 stations, and cost of ₹63,246 crore including interest on construction. 76.3 kilometers will be elevated and 42.6 kilometers underground.

Corridor 3 (Madhavaram to SIPCOT): 45.8 km - Connects Purasaiwalkam, Mylapore, Adyar, Taramani, Thoraipakkam and the southern IT corridor.

Corridor 4 (Lighthouse to Poonamallee Bypass): 26.1 km - Covers Nandanam, T. Nagar, Vadapalani, Porur and Poonamallee with east-west connectivity.

Corridor 5 (Madhavaram to Sholinganallur): 47 km - Longest corridor connecting Villivakkam, Anna Nagar, Koyambedu, Vadapalani, Ashok Nagar, Alandur, Madipakkam, Medavakkam and Perumbakkam.

Areas expected to benefit: Porur, Poonamallee, Adyar, Sholinganallur, Madhavaram, Mylapore, Taramani, Thoraipakkam, Villivakkam, Anna Nagar, Koyambedu, Madipakkam.

Property prices (last year growth): Poonamallee ₹5,750/sq ft (+4.5%), Porur ₹8,700/sq ft (+11.5%), Adyar ₹19,000/sq ft (+3%), Sholinganallur ₹8,950/sq ft (+19.3%), Madhavaram ₹8,750/sq ft (+16.7%), Villivakkam ₹9,900/sq ft (+8.6%).

Chennai Metrowater confiscated eight illegal booster pumps in Alapakkam, Maduravoyal, and Taramani. The crackdown aims to resolve water pressure issues and ensure equitable distribution of water supply.

Residents of Periyar Nagar and Gandhi Nagar in Taramani, Chennai, said foul, brackish water mixed with sewage has reached homes for nearly a year, forcing families to buy canned water. The problem worsened in recent weeks, prompting a protest near the Chennai Metropolitan Water Supply and Sewerage Board office in Ward 178 on Wednesday. Residents also complained of damaged roads and delays in replacing ageing drinking-water and sewer pipelines. Stormwater-drain work in parts of Gandhi Nagar has damaged drinking-water pipes, allowing sewage into the supply, they said; some roads have not been relaid for years.

Ward councillor S Baskaran said a ₹200 crore project to revamp drinking-water and sewerage pipelines across Taramani, including Periyar Nagar and Gandhi Nagar, had been tendered and work orders issued about a year ago under the Jal Jeevan Mission, but work had not begun. CMWSSB officials said work would start in October. The pipelines are around 40 years old, and about 33,000 residents depend on the network, which is strained by population growth and increased paying-guest accommodation.

• Chennai Metro Rail Limited (CMRL) has started tunnelling between Perambur Barracks Road and Pattalam for the 118.9-km Phase II project.
• The work is part of Corridor 3 between Madhavaram and Siruseri SIPCOT.
• The first Tunnel Boring Machine (TBM) on the stretch has completed nearly 600 metres.
• Because of space constraints near Pattalam, the underground section is being built as a stacked tunnel, with one Metro line above the other.
• The tunnel will go to a maximum depth of around 30 metres at some points.
• The TBM will pass through clayey soil and weathered rock beneath residential and commercial buildings along Perambur Barracks Road, then turn into Strahans Road and reach Pattalam.
• Perambur Barracks Road Metro station is being built near the mosque.
• Pattalam Metro station is coming up near Mahalakshmi Theatre on Strahans Road.
• CMRL expects the first tunnelling drive on this stretch to finish in about six months.
• Corridor 3 is expected to improve connectivity across north and south Chennai, linking Moolakadai, Sembiyam, Thirumayilai, Adyar, Taramani, Thoraipakkam, Sholinganallur and Siruseri SIPCOT.

• Chennai Metro Rail Limited (CMRL) has started tunnelling work for Phase II of the metro project between Perambur Barracks Road and Pattalam in Chennai.
• The underground stretch is part of the 118.9 km Phase II project and falls on Corridor 3 from Madhavaram to Siruseri SIPCOT.
• The network is expected to improve mobility for commuters in Perambur Barracks Road and Pattalam, both areas with small businesses, commercial establishments and residential buildings.
• The corridor is expected to make travel seamless to Moolaikadai, Sembiyam, Thirumayilai, Adyar, Taramani, Thoraipakkam, Sholinganallur and SIPCOT when operations begin.
• The Pattalam station is being built near Mahalakshmi Theatre on Strahans Road; the Perambur Barracks Road station is near the mosque.
• The first tunnel boring machine has already bored nearly 600 metres.
• The tunnel is being built as a stacked tunnel, with one line above the other, because of limited space at Pattalam.
• The stretch may reach a maximum depth of about 30 metres.
• The TBM will bore through clayey soil and weathered rock, and will pass under residential and commercial complexes before turning left into Strahans Road and reaching Pattalam.
• Officials estimate the first tunnelling drive will be completed in six months.