Japan - see which motorways and expressways are currently under construction. A clear, interactive visual overview from OpenStreetMap contributors.
Japan - see motorway and expressway sections currently under construction on a clear map. Follow ongoing investments and identify where near-term changes to connectivity are taking shape.
Japan – 2,094 highway segments under construction, including 2,091 motorway segments and 3 expressway segments.
Last update: 2026-10-11