Soil Tests Underway For 13.5-km Elevated Corridor Along East Coast Road

06 Apr 2026 CW Team

Soil investigations have started along the East Coast Road in Chennai for the 13.5-km Thiruvanmiyur–Uthandi elevated corridor. The contractor has set up temporary barricades on medians while conducting tests at 430 locations where pillars are planned. The corridor will be a four-lane structure and is expected to take a little over three years to build. Excavation of shallow boreholes and trial pits will mark the initial field work.

The project carries a budget of Rs 21 billion (Rs 21 bn) and aims to ease traffic congestion on the popular coastal stretch. Geotechnical teams will extract soil samples to determine the depth and sequence of sand, clay, soft rock and hard rock layers. Investigations will extend to depths of up to 25 metres to inform foundation design. Laboratory testing will assess bearing capacity, compressibility and groundwater conditions to support safe design.

An engineer associated with the work said samples would be analysed by the design department to determine foundation types and other structural parameters. The tests are scheduled over the next few months and will guide the design of pile foundations and related structures. Officials indicated that soil data will also influence construction sequencing and resource allocation. The design department will model load transfer and select suitable pile lengths and diameters based on the soil profiles.

Local travel is expected to be affected during the testing phase by temporary barricades and periodic drilling activities, and authorities have advised motorists to follow diversion signage. Project managers plan to incorporate the geotechnical findings into detailed drawings before commencing major piling and superstructure work. Once underway, the elevated corridor is intended to improve travel times and urban connectivity along the East Coast Road. Stakeholders expect the findings to reduce unforeseen delays during construction and to refine cost estimates.

Infrastructure Energy

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