France narrow gauge lines under construction or being extended. Active build and restoration projects across the narrow gauge rail network.
France narrow gauge lines currently under active construction: extensions to existing heritage and tourist railways, new mountain or scenic lines and industrial narrow gauge projects. Shows where the narrow gauge rail network is actively growing.
France currently has 482 railway segments under construction including 169 railway, 259 tram, 49 metro and 5 light rail.
Data: OpenStreetMap contributors
Last update: 2026-04-13