Have you checked out the Google Crisis Map? It’s impressive. It has real-time data collected by lots of users and Waze users. You can zoom in and see road closures. I can’t vouch for how accurate the data is, but it’s a starting point.
https://www.google.org/crisismap/weather_and_events
Will check and relay information!
Thank You! Founded
Make sure you click on ‘current traffic and speeds’ to actually pick up the road closures which don’t appear on the base map.