The Tamil Nadu government is planning a Rs 3,088 crore multi-deck elevated transport corridor at Old Mahabalipuram Road (OMR) under two phases to decongest the IT Expressway. The decision for the multi-deck elevated transport corridor comes even as land acquisition work for the Phase-II of Chennai Metro’s third corridor from Madhavaram to Sipcot is being carried out. The proposed corridor of Chennai Metro rail project will be an elevated stretch ahead of SRP Tools junction.
The Tamilnadu government has also planned an elevated corridor under two phases from Taramani to Siruseri in Phase-I and Siruseri to Mahabalipuram in Phase-II along OMR. The government has also made a plan to merge both Chennai Metro and Elevated Transport Corridor projects and initiate work on 18-km long Old Mahabalipuram Phase-I project from Taramani to Siruseri.
A single pier of 2.50 meters wide is proposed in the median which will have a vertical clearance of 5.5 meters. The multi-deck elevated transport corridor will be dual deck elevated corridor at certain places and at times triple-decked one. The elevated road will be at first level above ground and Chennai Metro rail will be in the second level. Chennai Metro rail will be at third level at three main junctions which include Perungudi, Thoraipakam and Sholinganallur wherein the elevated road will be in second level and the entry or exit ramp facilities will be in first level.
Both the elevated road and Metro Rail corridors will be in a single-pier system and have separate piers located alternatively on the road median. The elevated road will connect SRP junction and Siruseri junction and will have entry and exit ramps at Perungudi junction, Thoraipakkam, Sholinganallur junction, and Siruseri junction.
The proposed elevated transport corridor will have 12 foot over bridges with the scope to have advanced public facilities like escalators, lighting, security and 24×7 power supply. It has been estimated that the proposed elevated road will bear the volume of 10,178 car units per hour which are twice the capacity of the road.