Chennai Metro Rail Limited (CMRL) is planning to commence tunnelling work in Royapettah for the Chennai Metro Rail Project Phase-II in September 2024.
The project involves development of 118.9-km three metro corridors (corridor III, IV and V) in Chennai city of Tamil Nadu. It is mostly underground with elevated section confined to few short stretches and consists of 128 stations in total. The work on corridors I and II have been completed under Chennai Metro Phase-I.