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🏗️ INFRASTRUCTURE

Chennai Metro Phase-2 Near Launch; 3 New Extensions Proposed

With Phase-2 construction entering final stages, Tamil Nadu has sought Central approval for Airport–Kilambakkam, Koyambedu–Pattabiram, and Poonamallee–Sunguvarchatram corridors.

21 August 2026VizhiTN Editorial Team3 min read
Chennai Metro Phase-2 Near Launch; 3 New Extensions Proposed
📷 Visual Archive • VizhiTN Field Desk✓ Verified Story

Why this matters to Tamil Nadu

For Chennai commuters, Phase-2 metro lines will slash travel times on some of the city's most congested north-south and east-west routes. The Madhavaram–SIPCOT corridor alone connects the city's industrial north with its IT south — two poles currently reachable only via choked surface roads. For residents in Pallavaram, Chromepet, Tambaram, and Kilambakkam, the proposed Airport–Kilambakkam extension and double-decker GST Road corridor represent the first credible mass rapid transit solution for South Chennai. The Koyambedu–Pattabiram link would ease pressure on the heavily congested western suburbs.

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Key Highlights

Essential facts and key takeaways

6 points
Phase-2 Budget: ₹63,246 crore
Phase-2 Network: 118.9 km, 128 stations (3 corridors)
Total Network After Phase-2: 173 km
New Extensions Proposed: 3 corridors (Central approval sought)
GST Road Double-Decker: 18.4 km / ₹3,400 crore
Phase-2 Target Completion: 2027

Timeline

Chronological developments

6 events
1
October 2024
Union Cabinet approves Chennai Metro Phase-2 (₹63,246 crore, 118.9 km)
2
August 5, 2026
TN Budget proposes 3 new metro extensions; seeks Central approval
3
August 18, 2026
GST Road double-decker corridor (18.4 km) receives in-principle approval
4
Late 2026 – Early 2027
GST Road corridor construction expected to begin
5
2027 (target)
Chennai Metro Phase-2 full commissioning target
6
2030–31 (expected)
GST Road double-decker highway and metro deck fully operational

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