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.

Kannankottai Thervai Kandigai reservoir in Tiruvallur district, inaugurated five years ago, is being integrated into Chennai's drinking water network. Metrowater authorities are undertaking pipeline works to convey water to Red Hills reservoir. The reservoir has storage capacity of 500 million cubic feet (mcft). Since commissioning, it has served as raw water source for industrial use, with pipelines supplying Sipcot industrial estate nearby. Current project will augment water supply by 15 million litres daily.

Travel time from Chennai to Tirupati will drop by 30–45 minutes as the 18-km greenfield four-lane highway between Thiruninravur and Tiruvallur completes in September. The highway connects the Tiruvallur Bypass at Thirupachur with the Veppampattu Bypass at Thiruninravur, passing through Thaneerkulam, Thozhur, and Sevvapet. As of August 1, 15 km of 18 km is complete.

The new stretch is an access-controlled, fully fenced national highway with service roads on both sides. It allows traffic toward Tiruttani and Tirupati to bypass Tiruvallur town, Veppampattu areas, and the narrow two-lane Thiruninravur-Tiruvallur section. The 18-km project cost Rs 304 crore (begun 2022) and includes provisions for future six-lane expansion without additional land acquisition.

The entire 62-km stretch from Thiruninravur to Tirupati will be access-controlled four-lane with service roads. Simultaneously, the 44-km Tiruvallur to Tamil Nadu-Andhra border stretch launched last year at Rs 750 crore; 12% complete. The existing four-lane Chennai-Tirupati Highway runs 22 km from Padi-Korattur junction to Thiruninravur; the state highways department proposed widening it to six lanes but works remain stalled due to land acquisition issues.

Deputy Chief Minister Udhayanidhi Stalin inaugurated construction of a six-lane, access-controlled highway from Tiruvallur Bypass to Sriperumbudur on 2 May 2025. This Phase III covers 30.1 km and includes two-lane service roads on either side.

Phase III breakdown:

• Tiruvallur Bypass to Venkathur: 10.4 km, Rs 1,133.2 crore
• Venkathur to Chengadu: 10 km, Rs 593.27 crore
• Chengadu to Sriperumbudur: 9.7 km, Rs 963.27 crore
• Total Phase III cost: Rs 2,689.74 crore
• Construction includes two major flyovers, one road overbridge, two major bridges

Full CPRR project:

• Total length: 132.87 km
• Total cost: Rs 16,212 crore
• Funding from World Bank and international agencies
• Route: Ennore Port to Poonjeri near Mahabalipuram, passing through Thatchur, Tiruvallur Bypass, Sriperumbudur, SP Koil

Other phases:

• Phase I (Ennore Port to Thatchur, 25.4 km): 35% complete, Rs 4,290 crore
• Phase II (Thatchur to Tiruvallur Bypass): 68% complete, Rs 2,259 crore
• Phase IV (Sriperumbudur to SP Koil, 23.5 km): completed; DPR being prepared for upgrade
• Phase V (SP Koil to Poonjeri): land acquisition underway

Highway aims to facilitate movement of goods from southern Tamil Nadu to Ennore and Kattupalli ports and Andhra Pradesh, bypassing Chennai city. Main carriageway restricted to tolled vehicles; service roads available free.