UPDATE 3 P.M.:

Chain controls have been dropped on State Route 20 and State Route 89.

UPDATE 12:37 P.M.:

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Chain controls have been dropped on State Route 28.

On State Route 89, chains or snow tires are required from 2 miles north of Bliss State Park (El Dorado County) to Tahoe City (Placer County).

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UPDATE NOON:

Chain controls on I-80 have been dropped.

UPDATE 10 A.M.:

For Interstate 80 eastbound traffic: Chains are required on all vehicles except 4-wheel-drive vehicles with snow tires on all four wheels from Nyack (Placer County) to Truckee (Nevada County.

For Interstate 80 westbound traffic: Chains are required on all vehicles except 4-wheel-drive vehicles with snow tires on all four wheels from the Donner Lake Interchange (Nevada County) to 2.1 miles east of Baxter (Placer County).

Change controls have been lifted on State Route 267.

Interstate 80

Chains are required on all vehicles except 4-wheel-drive vehicles with snow tires on all four wheels from 2.1 miles east of Baxter (Placer County) to Truckee (Nevada County).

State Route 89

Chains or snow tires are required from 2 miles north of Bliss State Park (El Dorado County) to the Junction of I-80 (Nevada County).

Chains are required on all vehicles except 4-wheel-drive vehicles with snow tires on all four wheels from Truckee (Nevada County) to 11 miles north of Truckee (Sierra County).

State Route 28

Chains are required on all vehicles except 4-wheel-drive vehicles with snow tires on all four wheels from Tahoe City to 4 miles east of Tahoe City (Placer County).

State Route 267

Chains or snow tires are required from Truckee (Nevada County) to 5 miles south of Truckee (Placer County).

Chains are required on all vehicles except 4-wheel-drive vehicles with snow tires on all four wheels from 5 miles south of Truckee to Kings Beach (Placer County.

State Route 20

Chains are required on all vehicles except 4-wheel-drive vehicles with snow tires on all four wheels from 9.3 miles east of Nevada City to the Junction of I-80 (Nevada County).

Source: Caltrans