CentralRailwaysUnder ConstructionDelayed
Sivok-Rangpo New Rail Line
A tunnel-heavy rail link from Sivok in West Bengal to Rangpo in Sikkim, intended to connect Sikkim to the national rail network.
Estimated cost
₹12,000 cr
Reported spend
Not available
Announced
30 Oct 2009
Last verified
1 May 2026
Schedule check
Compared with the first announced target
The first rail link to Sikkim has crossed earlier target windows while tunnel and bridge works continue, so the project is tracked as delayed.
First target
Dec 2023
Current target
Dec 2026
Revised target
Not listed
Public relevance
Sikkim residents, tourism, border logistics and strategic mobility toward the eastern Himalayan region
Timeline
3 events
30 Oct 2009
Project foundation
The rail link was taken up to provide Sikkim with direct rail connectivity.
1 Jan 2023
Tunnel breakthroughs reported
Railway and contractor updates reported progress on multiple tunnels and bridges.
31 Dec 2026
Tracked revised window
Completion continues to be tracked against revised implementation windows.
Risk notes
- Himalayan geology and landslide exposure
- High tunnel concentration
- Strategic border-state execution complexity
Official/public sources
Use these links to inspect the underlying public sources for project details and updates.