The weather may shut down major highways, including I-5 at the Grapevine. Caltrans officials got ahead of the storm by installing a gate that will swing open, creating a turnaround across the median for drivers should the highway close from snow.
RELATED: CHP expects heavy traffic, hazardous driving conditions on Grapevine Wednesday
Crews say the gate was installed north of Lake Hughes Road in Castaic.
California Highway Patrol officers will be policing the highways heavily, and when it's needed, pacing cars during severe weather and poor visibility.
For up to date traffic conditions head to our Traffic Map.