Interstate 90 to close from Sioux Falls to Mitchell

Closure set for 10 p.m.

Road closed signage blocks the on ramp to Interstate 90 near Mitchell. (Republic File Photo)

MITCHELL — Interstate 90 will close from Mitchell to Sioux Falls at 10 p.m. Tuesday night due to conditions brought on by a major winter storm.

The South Dakota Department of Transportation announced the move early Tuesday evening through its official Facebook page.

"A combination of accumulating snow and strong winds is causing snow and ice-covered roads along with blizzard-like conditions,” the release reads. “Conditions are forecasted to continue to deteriorate during the overnight hours and throughout the morning hours.”

The closure affects both eastbound and westbound lanes.

In addition to the I-90 closure, the SDDOT also announced that both northbound and southbound lanes of Interstate 29 will be closed from the North Dakota state line to Brookings at 8 p.m. Both lanes of I-29 will also be closed from Brookings to Sioux Falls at 10 p.m.


The National Weather Service issued a blizzard warning for much of the state on Wednesday, Feb. 22, with heavy accumulating snow totals and sustained high winds expected to cause blizzard-like conditions and extensive drifting. With conditions approaching near zero visibility and significant drifting of snow, SDDOT anticipates additional sections of I-90 and I-29 will be closed on Wednesday morning as the system moves across the state.

No Travel Advisories are also expected to be placed on secondary highways throughout South Dakota due to high winds, blowing snow and low visibilities associated with this winter storm system.

Motorists should not use secondary highways to avoid Interstate closures. Significantly reduced visibilities and blizzard-like conditions, along with extreme wind chills, will make travel very dangerous over the next few days.

For the latest on road and weather conditions, please visit or dial 511.

Our newsroom occasionally reports stories under a byline of "Mitchell Republic." Often, the "Mitchell Republic" byline is used when rewriting basic news briefs that originate from official sources, such as a city press release about a road closure, and which require little or no reporting. At times, this byline is used when a news story includes numerous authors or when the story is formed by aggregating previously reported news from various sources. If outside sources are used, it is noted within the story.
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