OKLAHOMA CITY (AP) – Roadways in eight northwest Oklahoma counties are still closed or considered hazardous, but an Oklahoma Department of Transportation spokesman says almost 600 plow and truck drivers are working to clear Monday’s heavy snowfall.

The Oklahoma Department of Public Safety says all or most roads are closed from Beaver County in the Panhandle westward to Alfalfa County and southward to Roger Mills County. The highways affected include U.S. Highway 64 west from Alva and U.S. 60 between Seiling and Vici. All roads in Woods County are either snow-packed or hazardous.

ODOT spokesman Larry Clore says wind is blowing snow back onto some cleared roads but the sun is helping. Several road clearing crews have been brought in from south Oklahoma to help.