Metro Railway Kolkata invites open e-tenders (Notice No: Civil-2591-2026) for a 24-month zonal contract to maintain tracks and track beds between KNBN and KMUK stations, including Tollygunge Yard. The project cost is valued at ₹2,19,19,604 with bids due by July 3, 2026. Complete documents can be accessed at ireps.gov.in.