Update 3:15 p.m.:

For eastbound traffic, chains are required on all vehicles except four-wheel-drive vehicles with snow tires on all four wheels from Cisco to Truckee.

For westbound traffic, chains are required on all vehicles except four-wheel-drive vehicles with snow tires on all four wheels from Truckee to 2.5 miles east of the Junction of Highway 20.

Update 12:23 p.m.:

I-80:

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Interstate 80 is closed to all tractor-semitrailer combinations from Applegate to the Nevada state line due to spin-outs.

For eastbound I-80 traffic, chains are required on all vehicles except four-wheel-drive vehicles with snow tires on all four wheels from Nyack to Truckee.

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For westbound I-80 traffic, chains are required on all vehicles except four-wheel-drive vehicles with snow tires on all four wheels from Truckee to Nyack.

Highway 28:

For eastbound traffic, chains or snow tires are required from Tahoe City to the Nevada state line.

For westbound traffic: Chains are required on all vehicles except four-wheel-drive vehicles with snow tires on all four wheels from 4 miles east of Tahoe City to Tahoe City.

Highway 20:

Highway 20 is closed to all tractor-semitrailer combinations from Applegate to the Nevada state line due to spin-outs.

Chains are required on all vehicles except four-wheel-drive vehicles with snow tires on all four wheels from 6 miles east of Washington Road to the Junction of I-80.

Update 10:18 a.m.:

Interstate-80:

Chains are required on all vehicles except four-wheel-drive vehicles with snow tires on all four wheels from 2.1 miles east of Baxter to the Nevada state line.

Highway 267:

Chains or snow tires are required from Truckee to 3.7 miles south of Truckee.

Chains are required on all vehicles except four-wheel-drive vehicles with snow tires on all four wheels from 3.7 MI south of Truckee to Kings Beach.

Initially posted:

Snow caused chain controls and spin outs on Truckee-Tahoe area highways Thursday morning. About a foot of snow could fall today, the National Weather Service said.

CHP incident logs reported holding eastbound I-80 traffic at Cisco due to multiple spin-outs in the area of Soda Springs, as of 7:30 a.m. A collision involving three vehicles was reported at Highway 89 and W River Street.

Chain Controls

Interstate 80:

I-80 is closed to single drive axle tractor-semitrailers towing double trailers at Applegate for eastbound traffic and at the Nevada state line for westbound traffic, due to spin outs.

Chains are required on all vehicles except four-wheel-drive vehicles with snow tires on all four wheels from Nyack to the Nevada state line and vise versa.

Highway 267:

Chains are required on all vehicles except four-wheel-drive vehicles with snow tires on all four wheels from Truckee to Kings Beach.

Highway 89:

Chains or snow tires are required from Tahoma to the west Junction of I-80.

Highway 28:

For eastbound traffic: Chains or snow tires are required from Tahoe City to 4 miles east of Tahoe City.

For westbound traffic: Chains are required on all vehicles except four-wheel-drive vehicles with snow tires on all four wheels from 4 miles east of Tahoe City to Tahoe City.

Highway 20:

Chains are required on all vehicles except four-wheel-drive vehicles with snow tires on all four wheels from 6 miles east of Washington Road to the Junction of I-80.