Hawaii Railways Under Construction — Active Rail Build Projects and Line Extensions

Hawaii railways currently under construction. New rail routes, line extensions and infrastructure upgrades — active build projects across the network.

Hawaii 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 in OpenStreetMap by contributors on the ground, reflecting what is physically being built on the railway network.

Hawaii currently has 4 railway segments under construction including 4 metro.