The widening of the Kanchipuram–Vandavasi Road into a four-lane corridor is progressing rapidly under the Chief Minister’s Road Development Plan (CMRDP), with the project expected to provide a major boost to industrial activity around the Cheyyar and Vembakkam SIPCOT industrial complexes.
The upgraded road is being planned as a key freight corridor, with connectivity to the Chennai Peripheral Ring Road (CPRR) through Manampathi. The improved link is expected to facilitate smoother movement of raw materials and finished goods from the industrial corridor towards Chennai’s port facilities.
Industrial growth in Cheyyar and Vembakkam has been constrained by congestion on the existing two-lane Kanchipuram–Vandavasi Road. Frequent traffic delays have affected the movement of industrial inputs and finished products, while workers have also faced difficulties reaching industrial units on time. Several accidents have reportedly occurred along the congested stretch, prompting industrialists, employees and local residents to seek an upgrade of the road.
The widening project is being implemented in multiple phases. The first phase covers a 9-km stretch between Mangal and Manampathi junctions at an estimated cost of ₹78 crore. The works include widening the existing two-lane road, widening or reconstruction of culverts wherever required and constructing stormwater drains in residential areas to prevent waterlogging during the monsoon.
The second phase covers a 72-km stretch from Manampathi near Cheyyar SIPCOT towards Tiruvannamalai. The government has initiated land acquisition and design-related works for this phase. While the original proposal envisaged extending the road only up to Vandavasi, the government subsequently decided to integrate the corridor into a wider economic and industrial network.
A major component of the broader plan is the proposed connectivity between the Cheyyar industrial region and Oragadam. This is expected to bring the industrial clusters around Chennai closer to Cheyyar SIPCOT and create a larger integrated industrial belt in the northern part of Tamil Nadu.
The government has issued orders for acquisition of around 307 acres across 34 villages. The affected areas include 14 villages in Vandavasi, seven in Cheyyar, eight in Keezh Pennathur and five in Tiruvannamalai. Construction tenders for the major works are expected to be floated after the local revenue authorities complete valuation of the land to be acquired.
The expanded corridor is planned to feature central medians, bus lay-by facilities and improved drainage infrastructure, in addition to the wider carriageway. The project is also expected to address existing bottlenecks closer to Kanchipuram, improving access for devotees and tourists travelling from the Vandavasi side.
A new high-level flyover is also planned near the existing Sevilimedu bridge on the Kanchipuram–Vandavasi Road to ease congestion at the beginning of the corridor. The flyover is targeted for completion by 2028.
The road development is being complemented by the proposed expansion of the Cheyyar–Vandavasi–Polur route, which is expected to include major bypasses around Vandavasi and further improve regional connectivity.
Once the various phases are completed, the upgraded corridor is expected to function as a high-speed feeder route linking major industrial centres with Chennai’s wider transport network. Improved connectivity between Tiruvannamalai, Cheyyar, Vandavasi, Oragadam and Chennai is likely to support more efficient freight movement, reduce logistics delays and strengthen the region’s industrial and economic potential.