Winter's weekend drop of snow, sleet and ice across North Carolina cost the state Department of Transportation more than $4.5 million, officials said Thursday.

About 55 percent of expenditures from Jan. 27 to Feb. 4– $2,541,042 – was for 28,927 tons of salt.

Some salt barns are less than 20 percent full and now, the DOT is trying to replenish its supply for any future storms. It's receiving about 200 to 300 tons a day, DOT spokesman Steve Halsey said.

"We want to try to get it delivered as quickly as we can, because you never know what's coming around the corner," he said.

That could be soon.

Forecasters say that northern North Carolina counties could see a mixture of snow sleet and freezing rain as early a Friday morning. Some parts of the Triangle could see light ice that could accumulate on bridges, overpasses and power lines.

Officials said they believe they have enough salt on-hand to treat roads this weekend if necessary.