Kolkata Metro

Operational Operator: Metro Railway Kolkata / KMRC Length: 73.4 km Official site ↗

Kolkata Metro holds a special place in Indian transit history as the country’s first metro, with services running since 1984. It is also the only metro in India operated by the Indian Railways, through Metro Railway, Kolkata. Decades after that first line, the system is expanding again with new corridors that include a landmark under-river crossing.

The network

The original Blue Line runs north to south along the spine of the city and remains the busiest corridor. The newer Green Line, the East-West Metro, carries the network under the Hooghly River through India’s first under-river transport tunnel, linking Kolkata with Howrah. Further lines, the Purple, Orange and Yellow corridors, are at various stages of construction, pushing the metro into the suburbs. Total operational length is around 73 km and growing.

Operator and what comes next

Metro Railway, Kolkata, a unit of the Indian Railways, builds and runs the system, which makes it unique among Indian metros. Work continues on the new corridors and on extending the East-West and north-south lines. Section openings, contract awards and tenders arrive as construction advances.

Latest Kolkata Metro news

The stories below refresh on their own as we publish: corridor openings, East-West progress, contract awards and tenders.

Metro Rail ProjectsBig Breakthrough for Kolkata Metro’s Purple Line as TBM Divya Reaches Victoria Metro Station 12/08/2026Kolkata MetroKolkata Metro: RVNL invites bids for construction of 10 elevated stations & viaduct on Baranagar-Barrackpore Corridor29/07/2026Kolkata MetroKolkata Metro Green Line to move driverless: CRS performs safety checks13/07/2026Kolkata MetroKolkata Metro gains momentum with TBM Breakthrough on Purple Line10/07/2026Kolkata MetroABB India deploys advanced electrification and motion-control solutions across the Kolkata Metro network25/06/2026Kolkata MetroShri Prem Sagar Gupta takes charge as new General Manager of Kolkata Metro08/06/2026Kolkata MetroMetro Railway Kolkata invites Rs 43 crore tender for Blue Line viaduct rehabilitation29/05/2026Kolkata MetroKolkata Metro finishes Chingrighata work early, Orange Line construction picks up pace25/05/2026Kolkata MetroKolkata Metro: Work begins on the Orange Line’s Chingrighata section18/05/2026Kolkata MetroKolkata Metro Blue Line gets Rs 671.7 crore upgrade, more trains and faster services planned11/05/2026Kolkata MetroKolkata Metro Floats ₹345.76 Crore Tender for Electrical Works in Phase 123/02/2026Kolkata MetroKolkata Metro: From India’s First Metro Rail to a 21st Century Urban Rail Transit Network12/12/2025

See all Kolkata Metro coverage →

Frequently asked questions

Which is India’s first metro?
Kolkata Metro, with services running since 1984.

Who runs the Kolkata Metro?
Metro Railway, Kolkata, a unit of the Indian Railways. It is the only Indian metro run by the railways.

What is the East-West Metro?
The Green Line, which crosses under the Hooghly River through India’s first under-river transport tunnel to connect Kolkata and Howrah.

Latest ridership: 6.5 lakh/day (2023 - verify)

Route map coming soon.

No active contract data yet.