Chennai Metro’s Avadi–Pattabiram Corridor clears preparatory stage, India August 20, 2025 | Asia Pacific News, News The state government of Tamil Nadu has approved preparatory work for the 21.76-km-long Koyambedu–Avadi–Pattabiram corridor under Phase II of the Chennai Metro. With this clearance, Chennai Metro Rail ... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password