Okayama Prefecture - see which motorways are currently under construction. A clear, interactive visual overview from OpenStreetMap contributors.
Okayama Prefecture - see motorway sections currently under construction on a clear map. Follow ongoing investments and where near-term connectivity is changing.
Okayama Prefecture currently has 85 road segments under construction including 52 motorway, 22 trunk road and 11 primary road.
Last update: 2026-09-17