Interstate 29 headed in both directions near the Worthing exit is at a standstill at times because of icy conditions.
There is a crash involving a semi and five cars in the area. No one is seriously injured.
The South Dakota Highway Patrol says the road is ice covered and cars are all over the interstate and officials urge people to use extreme caution.
KELOLAND News has several crews and employees in the area who say conditions are very slow-going.
We are working to gather more information on the situation and will keep you updated as details come in.