All South Dakota interstates that were closed due to this weekend's winter storm have been reopened according to KSFY.

All lanes of both Interstate 90 and Interstate 29 are open in both directions, according to the South Dakota Department of Public Transportation.

I-90 between Mitchell and Rapid City was closed Saturday, and I-29 north of Watertown was closed Sunday due to poor conditions. They were both reopened at 11 a.m. Monday. I-29 in North Dakota has also reopened.

Even though the Interstate is open, driving conditions remain difficult throughout much of the state.  Roads across the state remain ice-covered, snow-packed and slippery.  Bridges and overpasses are particularly slick.  Drifting snow over roadways continues to be a problem in open areas.

SDDOT snowplows crews are out working and remind motorists to not crowd the plow.  Plows travel under 25 mph, please stay eight car lengths behind the plow to allow ample stopping time on the icy roadway and never pass in a snow cloud

You can find the latest South Dakota road conditions here.

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