A 400 MLD (million litres a day) desalination plant will be established at Minjur at an estimated cost of Rs 4,800 crore to serve north Chennai, Avadi, Ponneri and Minjur.

Additional water and sewage infrastructure announced:

• 24/7 water supply project in Avadi: Rs 500 crore
• Water supply improvements in Madurai, Cuddalore and other municipalities: Rs 1,000 crore
• Restoration of 33 old water schemes: Rs 300 crore
• Upgradation of Kilpauk water treatment plant: Rs 410 crore
• Sewage system upgrades in Madurai, Nagercoil and Chennai

Other urban development projects:

• Road restoration and construction across urban local bodies: Rs 1,850 crore
• Integrated Urban Development Plan including modern roads and safe school access: Rs 275 crore
• Planting one crore saplings
• Park development in Tiruchirappalli, Tiruppur and Pudukkottai: Rs 130 crore
• 250 new parks across the state: Rs 175 crore
• School facility upgrades: Rs 335 crore
• Infrastructure improvements in underdeveloped Chennai Corporation zones: Rs 100 crore

The 133-km Chennai Peripheral Ring Road will connect Kattupalli near Ennore with Poonjeri near Mamallapuram. Taken up in 2018 after the first JICA loan agreement, it began major construction around 2021; its 2023 target was revised to 2025 and 2026. Sections III and V remain unfinished; JICA schedules Section V’s opening for June 2030.

• Section I, Kattupalli–Thatchur: work continues, delayed by waterbodies, high-voltage lines and utility shifting; potential for logistics and port industries.
• Section II, Thatchur–Tiruvallur Bypass: Punnapakkam–Tiruvallur Bypass is complete. Thatchur–Punnapakkam was 65% complete in February 2026; the whole section is reported complete, but no updated official certificate is public. Plotted housing, affordable homes and warehouses may grow around Tiruvallur, Thamaraipakkam and Periyapalayam.
• Section III, Tiruvallur–Sriperumbudur: packages were 24%–28% complete in February 2026; completion expected in 2028.
• Section IV, Sriperumbudur–Singaperumal Koil: main road substantially complete; service roads and some acquisition remain. Industry supports demand for factories, warehouses, shops and employee housing.
• Section V: acquisition continues and tenders have been issued; CRZ, waterbody, forest and land-use restrictions apply.

Announced projects include Prologis’s 51-acre, 1.1-million-sq.-ft. logistics park near Red Hills; Sumadhura’s ₹400-crore industrial and logistics park in the Red Hills belt; a proposed CPRR railway corridor at feasibility-study stage; and a ₹175-crore semiconductor and electronics park at Maduramangalam. Fresh acquisition notices in Ikkadu Kandigai invite landowner objections.

Chennai Metrowater is laying a pipeline from Madhavaram GNT Road to Madhavaram Red Hills Road to improve water supply in northern parts of the city. The project cost is ₹16.45 crore with 85% completion as of August 2026. The nearly 3.3-km long ductile iron pipeline (700 mm diameter) will divert water from Puzhal water treatment plant's central transmission main to Madhavaram booster station. Once complete by September, residents of three zones (Manali, Madhavaram, Tiruvottiyur) will receive additional 23 million litres of water per day. The project was devised as an alternate water source following the two-year shutdown of Minjur desalination plant. Nearly 1.75 lakh residents will benefit. Trenchless technology is being used to cross GNT Road avoiding traffic congestion. The project was announced in the 2024-25 State budget. However, residents reported that many areas of Madhavaram including Lakshmi Nagar, VGP Nagar, Mohan Nagar, Shastri Nagar, and Thirumalai Nagar still lack regular piped water supply, with damaged existing pipelines not yet restored.

The 132.87-km, six-lane access-controlled Chennai Peripheral Ring Road (CPRR), developed by TNRDC under the Tamil Nadu Highways Department, will connect Ennore Port to Poonjeri near Mamallapuram through five sections. The ₹12,301-crore project is funded by JICA, AIIB and the OPEC Fund for International Development. Its proposed 60-metre right of way includes six main lanes and two service lanes on each side; design speed is 120 km/h. Mahabalipuram–Sriperumbudur travel time is expected to fall to 40 minutes.

• Section 4, Sriperumbudur–Singaperumalkoil, is operational.
• Sections 2 and 3, Thatchur–Sengadu (about 56.2 km), were nearing completion in early 2026, funded by an AIIB loan of USD 378 million and OFID financing.
• Section 5, Singaperumalkoil–Mamallapuram (27.41 km), was upgraded from four to six lanes. A tender was floated in December 2025, though the article also says tendering had not yet occurred as of its update; land acquisition was in its final stage.
• Section 1, Ennore Port–Thatchur (25.4 km), is delayed until 2027, with relocation of 12 water tanks and power-line rerouting among the obstacles.

Acquisition across unfinished sections covers more than 234 hectares in over 30 villages and affects about 676 families. Kattupalli, Minjur, Thiruvottiyur, Vandalur and Kovalam are among affected villages. Sriperumbudur land rose 96.0% in three years and 145.0% in five, while apartment prices fell 10.3% in the past year. The article flags service-road acquisition, displacement, delays and speculative ECR plot listings near Mamallapuram. It cites Mahindra World City, Zoho, Ford and SRM Institute as existing demand drivers near Sriperumbudur, and the Singaperumal Koil Railway Overpass as a planned GST Road connection.

Developed by the Chennai Metropolitan Development Authority, the 62-km, six-lane, access-controlled Outer Ring Road runs from Minjur to Vandalur/Perungalathur. CTH Road/NH-205 at Nemilichery connects to Avadi, Pattabiram, Tiruvallur and the Tirupati direction. NH-16/GNT Road at Red Hills–Nallur and Minjur provides access to northern logistics and port zones, including Ennore and north Andhra routes; Chennai and Ennore ports are reachable via GNT Road and radial links from Red Hills and Minjur.

Blackstone-backed platforms, IndoSpace and ESR Group have invested in large-format logistics parks along the corridor. Around 36 acres across Morai, Karungaracheri and Minjur have been earmarked for specialised warehousing. The corridor’s investment potential is also associated with industrial hubs in Sriperumbudur, upcoming Metro Phase 2 and Fintech City.