California Department of Transportation

Winter Operations

Link to quickmap

Check Current Highway Conditions
You can also call 1-800-427-7623 for current highway conditions.

Planned Lane Closures

Caltrans Districts
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Snow Removal Operations
Snow and Ice Control Plan (PDF 2.73 MB)

Live Traffic Cameras
Click a link below to go to the map of the traffic cameras from Sacramento to Lake Tahoe.

Traffic Cameras

Check Current Road Conditions
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California Highway Information Network (C.H.I.N.)
When traveling in California try our toll free service 1-800-427-ROAD (7623). This service is available free from any touch-tone phone, cellular phone or pay phone. For other areas outside of California please dial 916-445-7623. This system provides information regarding the condition of the California State Highway System. It covers incidents that cause significant delays to the normal flow of traffic such as, but not limited to, full closures, one-way traffic controls, lane closures, construction, maintenance projects, and emergencies. Normal commute traffic, ramp closures and traffic flow conditions are not included in these reports.
Chain Requirement Levels and Traffic Control Definitions
Chains or snow tread tires required. Snow tires must have a tread depth of 6/32" with a "M & S" imprint on the tire's sidewall.
Chains required on all vehicles except four-wheel drives or all-wheel drives with snow tread tires on all four wheels.
Chains required - ALL VEHICLES- no exceptions
R-1 and R-2 are the most common chain controls. The highway will often be closed before an R-3 control is imposed.
Road Closed
Split Control - Chains or snow tread tire requirements are set at two separate points of the highway for different requirements. It is not uncommon to have R-1 conditions from point A to point B and R-2 conditions from point B to point C.
Truck Hold - During major storms when traffic flow is heavy, Caltrans may hold commercial tractor-trailer combinations at specific points below the snow line. These points typically are:
Eastbound I-80 at Applegate (east of Auburn, CA)
Westbound I-80 at Verdi, Nevada (west of Reno, NV)
Hold Traffic - Traffic is held due to spinouts and accidents. When the spinout or accident is cleared, traffic is then released.