California Highway Patrol advised motorists to avoid heading up to snow areas on Saturday, at one point closing down the eastbound and westbound Interstate-8 lanes near Pine Valley.
At around noon, all lanes were closed until more snow plows could arrive, and traffic was backed up several miles due to the closure.
As of 1 p.m., one lane on both sides of the interstate are open.
Chains will be required for all vehicles on the I-8, according to the CHP.
