UPDATE: All closed portions of interstates are now open

UPDATE:

Officials have opened the closed portion of Interstate 90 from Chamberlain to Sioux Falls and I-29 from Sioux Falls to the North Dakota border.

All portions of closed interstates are now open.

Officials said motorists are strongly cautioned that winter driving conditions of compacted snow and ice and blowing snow are making travel difficult not only on the Interstate, but other highways across the state.

Plow crew are out working to continue getting roads in better driving condition.

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UPDATE: Authorities have reopened a portion of Interstate 90 in western South Dakota.

I-90 between Chamberlain and Rapid City is now open, according to the South Dakota Department of Transportation. It remains closed between Chamberlain and Sioux Falls.

I-29 remains closed from Sioux Falls to the north Dakota border.

Authorities have not given an estimated time of opening.

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Hundreds of miles of South Dakota interstates remain closed Friday due to a spring snowstorm moving through the area.

Interstate 90 between Sioux Falls and Box Elder remains closed, as does Interstate 29 north of Sioux Falls.

A no travel advisory remains in effect for most East River highways. You can find the latest driving conditions from the South Dakota Department of Transportation here.