There are several current and past fires in California, Oregon and Nevada that may get in the way of your route planning.
You can go to:
click on incident
and search by incident name if you know it, or by state.
A partial list of closures, check the areas you want to ride through. These block some of th eroutes I was looking into.
The "Reading" fire has closures of all off road north of Lassen Nat Park to Old Station
The "Chips" Fire has closures from the Sierra crest to Lake Almanor north of hwy 70.
The "Rush" Fire is in north east CA, east of 395 and may block routes coming from NV.