CentralUrban MetroPartly OperationalDelayed
Kolkata East-West Metro Corridor
A metro corridor connecting Salt Lake, Sealdah, Esplanade and Howrah, including India’s first underwater metro tunnel beneath the Hooghly River.
Estimated cost
₹8,575 cr
Reported spend
Not available
Announced
1 Feb 2008
Last verified
1 May 2026
Schedule check
Compared with the first announced target
The corridor opened in sections, including the Hooghly underwater stretch, after major tunnelling and urban-building risks delayed full completion.
First target
Dec 2015
Current target
Dec 2025
Revised target
Not listed
Public relevance
Kolkata and Howrah metro commuters, intercity rail users and central business district travellers.
Timeline
2 events
13 Feb 2020
First section opened
Commercial service began on an initial Salt Lake stretch.
6 Mar 2024
Underwater section inaugurated
The Howrah Maidan-Esplanade underwater metro stretch was inaugurated.
Risk notes
- Dense urban tunnelling and building-settlement risks
- Balance corridor integration remains schedule-sensitive
Official/public sources
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