UPDATE, 12:25 p.m.
Winter weather has been a major problem for drivers in the Sioux Falls areas.
Since Friday, Sioux Falls Police Department said it has responded to 68 crashes. Throughout the weekend the area saw freezing rain and then several inches of snow.
The Sioux Falls area saw around three to six inches of snow.
On Monday, law enforcement agencies are still encouraging drivers to take precautions on the roads. Authorities say blowing snow, causing drifts and decreased visibility is a major concern.
UPDATE, 11:15 a.m.
All South Dakota interstates have reopened, according to the state Department of Transportation.
Many roads remained icy and snow-packed Monday after a winter storm dumped snow and sleet across the region.
Interstate 29 north of Watertown remains closed Monday morning, as does most of I-90 between Mitchell and Rapid City.
Officials are advising against travel on a number of other roads across South Dakota and into Minnesota.
Parts of northeastern and north central South Dakota saw over a foot of snow this weekend. The Sioux Falls area saw around three to six inches of snow.
Strong winds are creating visibility concerns across the region Monday. You can find the latest weather conditions on KSFY's weather page.