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 532 railway segments under construction including 180 railway, 232 tram, 114 metro, 5 light rail and 1 narrow gauge.
Last update: 2026-07-12