According to officials, IIT professor Arul Jayachandran and engineering students were present when the inspection was conducted.
The decision to change the design of the bridge was made in April this year when Rs 25 crore was allocated. Anti corrosion equipments could be used for the bridge in the Pamban area which was considered to be second most corrosive site of the world.
The Inspection and feasibility study would be completed in two weeks, officials said.