The Chennai Peripheral Ring Road (CPRR) is a major infrastructure project in Tamil Nadu, designed to enhance connectivity and reduce traffic congestion in the Chennai Metropolitan Region. Spanning 132.87 kilometers, this six-lane, access-controlled expressway will link Ennore Port in the north to Mahabalipuram in the south, intersecting major highways such as NH5, NH4, NH45, and the East Coast Road (ECR).

The project is divided into five phases, with Phase III recently inaugurated by Tamil Nadu Deputy Chief Minister Udhayanidhi Stalin. This phase covers a 30.1 km stretch from Tiruvallur Bypass to Sriperumbudur and includes two-lane service roads on both sides. The entire CPRR project is estimated to cost Rs 162.12 billion and is funded by the World Bank and other international agencies.

Once completed, the CPRR is expected to significantly reduce travel time between key industrial hubs and ports, facilitate smoother freight movement, and promote economic development in the region. The expressway will also feature Intelligent Transport Systems (ITS) to ensure high-speed travel and enhanced safety standards.

The CPRR is poised to become a transformative corridor, bolstering Chennai's position as a vital economic and logistical hub in India.