Here are the upcoming lines of the Chennai Metro and their expected completion dates:
| Line | Start Station | End Station | Expected Completion Date |
|---|---|---|---|
| Line 3 | Madhavaram Milk Colony | SIPCOT 2 | December 2025 |
| Line 4 | Light House | Poonamallee | December 2025 |
| Line 5 | Madhavaram Milk Colony | Sholinganallur | December 2026 |
| Line 6 | Thirumangalam | Avadi | December 2027 |
| Line 7 | CMBT | Avadi | December 2028 |
The Chennai Metro Phase 2 is expected to be completed and opened in phases from 2025 onwards. After phase 2 is built and completed in 2028 (estimated), Chennai’s metro network will become roughly 173 km long.