● Purple Line
Chennai Metro Rail (CMRL)
Under Construction
Chennai Metro Purple Line Overview
The Purple Line, Corridor 3 of Chennai Metro Phase 2, is an under-construction line of about 45.8 km from Madhavaram Milk Colony to SIPCOT Siruseri, the longest Phase 2 corridor. Mostly underground, it will link north Chennai with Purasaiwalkam, Royapettah, Adyar, Taramani and the IT Corridor along Old Mahabalipuram Road. Around 48-50 stations are planned. No section has opened yet. Explore the planned Chennai Metro Purple Line route, proposed station list, interchange points, approval and construction status, and the latest project updates.
Purple Line Station List 2026 (0 Active)
Parking Feeder Bus ATM Restroom
Under Construction ·
Proposed
Madhavaram Milk Colony
Madhavaram High Road
Moolakadai
Sembiyum
Perambur Market
Perambur
Ayanavaram
Otteri
Pattalam
Perambur Barracks Road
Purasaiwakkam
Kellys
Kilpauk
Chetpet
Sterling Road
Nungambakkam
Anna Flyover
Royapettah
Dr. Radhakrishnan Salai
Mandaiveli
Greenways Road
Adyar Junction
Adyar Depot
Indira Nagar
Thiruvanmiyur
Taramani
Nehru Nagar
Kandanchavadi
Perungudi
Thoraipakkam
Mettukuppam
PTC Colony
Okkiyampet
Karapakkam
Okkiyam Thoraipakkam
Sholinganallur
Sholinganallur Lake I
Sholinganallur Lake II
Semmancheri Depot
Semmancheri I
Semmancheri II
Gandhi Nagar
Navallur
Siruseri
SIPCOT 1
SIPCOT 2
Purple Line Route Map 2026
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Purple Line History, Facts & Expansion
- The Purple Line is Corridor 3 of Chennai Metro Phase 2, from Madhavaram Milk Colony to SIPCOT Siruseri.
- It is about 45.8 km long, making it the longest Phase 2 corridor.
- Around 48-50 stations are planned, with a large underground section through central Chennai.
- It will serve Perambur, Purasaiwalkam, Royapettah, Adyar, Taramani, Sholinganallur and the OMR IT corridor.
- Interchanges are planned with Phase 1 lines and with Corridors 4 and 5.
- The line was under construction as of October 2026, with no opening date announced.
- Corridor 3 has one of India's longest underground metro sections.
- It will serve Madhavaram, Perambur, Ayanavaram, Kellys, Royapettah, Mylapore, Adyar and Thiruvanmiyur.
- The Phase 2 project is funded with JICA, ADB, AIIB and New Development Bank loans.
- Tunnel boring machines were deployed in multiple packages across the city.
Chennai Metro Purple Line Phase-wise Expansion
Phase 2 - Northern Section (Under construction)
Madhavaram-Central Chennai underground section in progress.
Phase 2 - Southern Section (OMR) (Under construction)
Elevated section along Old Mahabalipuram Road to SIPCOT.
Opening (Planned)
No date announced; sections expected from 2027 onwards.
Siruseri-Kilambakkam (Not recommended)
Feasibility study recommended bus services instead.
Purple Line FAQs
The Chennai Metro Purple Line (Corridor 3) is planned to have 50 stations connecting Madhavaram Milk Colony to SIPCOT.
The Purple Line will connect Madhavaram Milk Colony to SIPCOT, covering approximately 45.8 km through several parts of Chennai.
No, the Purple Line is currently under construction as part of Chennai Metro Phase II and is not yet open for passenger services.
Chennai Metro Phase II has a target completion timeline of December 2028. The Purple Line may begin operations in phases, depending on construction progress and safety approvals.
The Purple Line is planned to connect with other metro corridors at designated interchange stations, making transfers between different Chennai Metro routes easier.
Yes, the Purple Line will include both underground and elevated sections to provide metro connectivity across different areas of Chennai.
The Purple Line is planned to cover approximately 45.8 km between Madhavaram Milk Colony and SIPCOT as part of Phase II.
The Phase II network is designed to improve connections with suburban rail and other public transport services at selected locations along the corridor.
Yes, passengers will be able to use the Purple Line once the relevant sections are completed, tested and approved for public operations.
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