COLUMBIA, S.C. (AP) - Primary roads throughout South Carolina remain covered in snow and ice, and officials are warning people to stay home for another day.

The state Department of Transportation recommended Thursday that people stay off roads unless absolutely necessary.

Officials said more than 1,400 Transportation workers were working in 12-hour shifts to distribute a total of 17,000 tons of salt and sand to the state's roads. Crews were plowing in all parts of the state except coastal areas near Charleston, where precipitation has been mostly rain rather than snow or sleet.

More than 1 million gallons of salt brine have been spread across the state.

All of the state's bridges except one were open Thursday. Officials have closed the Ravenel Bridge between Charleston and Mount Pleasant because of falling ice.

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