NHAI to develop 18.4-km double-decker viaduct between Kilambakkam and Chettipunyam in Chennai, India December 23, 2025 | Asia Pacific News, News The Government of Tamil Nadu has granted in-principle approval for the development of an 18.4-km double-decker viaduct in Chennai, planned as an integrated transport corridor between the Kalaignar Cen... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password