Live answer for the three highways up to Big Bear Lake: SR-330 through Running Springs, SR-18 (Rim of the World and the back way from Lucerne Valley) and SR-38 from Redlands. Pulled from Caltrans chain-control stations and refreshed every few minutes.
No chain controls or closures right now on SR-330, SR-18 or SR-38, as of 12:16 am Pacific. Carry chains in winter; controls can go up within minutes in a storm.
Live roads, cams and lots
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Before you go
On storm weekends, chain controls and holds at the checkpoints can come and go within the hour, and lots at the resorts fill early. If one road is backed up, check the others here before you commit. Big Bear road conditions, cams and chain-up areas.
What the levels mean: R-1 means chains are required unless you have snow tires; R-2 means chains are required on everything except 4WD/AWD vehicles with snow tires on all four wheels (and those must still carry chains); R-3 means chains on all vehicles, no exceptions. Full R-1, R-2, R-3 explainer · How to put on chains.
Lots, cams and crowd calendar by resort: Snow Summit · Bear Mountain · Snow Valley.