About 20 km of Chennai Metro Rail Project Phase-II has been completed. It includes 10.77 km underground and 10 km elevated section of both upline and downline corridors.
The project involves development of 118.9-km three metro corridors (corridor III, IV and V) in Chennai, Tamil Nadu. It is mostly underground with elevated sections confined to a few short stretches, consisting of a total of 128 stations. The work on corridors I and II have been completed under Chennai Metro Phase-I.