en.Wedoany.com Reported - The National Highways Authority of India (NHAI) plans to expand the 68-km stretch between Chengalpattu and Tindivanam to six lanes, along with the construction of a 12-km fully access-controlled bypass road. The proposal has been submitted to the Ministry of Road Transport and Highways (MoRTH) for approval.

The project aims to alleviate traffic congestion on the Grand Southern Trunk Road and enhance long-distance transport efficiency. The bypass road is designed as a fully access-controlled corridor, separating through traffic from town roads. According to the plan, the bypass will start near Pachaiamman Koil at the intersection of National Highway 32 with Kancheepuram Road and rejoin the highway at Pakkam near the Uthiramerur Road intersection. The proposal also includes constructing a new bridge over the Palar River to address the bottleneck caused by the existing two-lane bridge. Officials expect the bypass to reduce traffic delays within Chengalpattu town and improve connectivity for freight and passenger services.
The detailed project report was submitted to the central government before the Tamil Nadu Legislative Assembly elections, but the review process was delayed due to the enforcement of the Model Code of Conduct. Recent discussions at a NITI Aayog meeting, along with the Chief Minister's call to expand the Chengalpattu to Trichy corridor, may help advance the project. Administrative approvals and funding priorities will determine the subsequent implementation progress.
NHAI officials stated that the expansion plan currently extends only to Tindivanam due to higher traffic volumes on that section. Beyond Tindivanam, a new highway has been proposed between Singaperumalkoil and Trichy. Once the new corridor becomes operational, most long-distance traffic is expected to shift, leading the agency to conclude that there is no immediate need for further expansion of the existing highway. Additionally, the proposed Tambaram to Chengalpattu elevated highway is being redesigned to align with the state government's requirement for metro corridor integration, and this plan still requires final approval from MoRTH.
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