The first phase of the extension from Washermanpet to Wimco Nagar in North Chennai has been commenced by the Chennai Metro Rail.
It has invited international bids from eligible bidders for design validation and construction of underground station boxes diaphragm wall at Sir Thiyagaraya College and Korukkupet. This includes associated cut-cover and bored TBM tunnels.
The Urban Development Ministry recently approved the phase-I extension project, and sent it Public Investment Board for appraisal.
The Rs 3,770-crore, 9-km project is partly underground from Washermanpet to Korukkupet and then continues as an elevated corridor up to Wimco Nagar.