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Open-source social media is growing
(sopuli.xyz)
Cooperative community open-source fork of Organic Maps, an offline privacy-respecting not-for-profit OpenStreetMap GPS app for your phone.
OSM discourages including any temporary road closures afaik, they are very particular about that. So it would not be very useful to rely on the little data that exists about it, since it may also not be up to date in many cases.