South Korea railways currently under construction. New rail routes, line extensions and infrastructure upgrades — active build projects across the network.
South Korea railway lines currently under active construction: new routes, extensions to existing lines and major rail infrastructure upgrades. Includes new high-speed corridors, electrification projects, double-tracking schemes and regional line extensions. Data tagged by OpenStreetMap contributors on the ground, reflecting what is physically being built on the railway network.
South Korea currently has 553 railway segments under construction including 442 railway, 45 tram, 4 metro and 62 light rail.
Data: OpenStreetMap contributors
Last update: 2026-04-21