PITTSBURGH (KDKA) – PennDOT says it will be out treating roads all night.

Many roads are still covered in snow and slush from the continual snowfall Saturday.

Officials say the slush could freeze over.

The wind also kicked up Saturday, whipping around the snow and creating white out conditions.

Many major roads, like Interstate 79, were completely covered and drivers were crawling at speeds of only 10 miles per hour.

PennDOT says it will continue to treat the roads all night.

“So we urge motorists who don’t need to be out on the roads tonight, please, if you can avoid travel, it would be helpful to our effort,” said Steve Cowan with PennDOT. “As far as the cool temperatures are concerned, again, we will mix the anti-skid mixture in with our salt. Salt starts losing its effectiveness in temperatures around the teens, so we’ll have to come up with a different strategy other than just relying on salt.”

Cowan says to drive slowly and keep plenty of space between your car and other vehicles. He says as the temperatures drop, crews will be focusing on plowing and laying down anti-skid.

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