City of Madison issues Snow Alert; DOT closes portions of I-29 and I-90

A Snow Alert is in effect in the City of Madison.  The Snow Alert went into effect at 2:00 this morning and will remain in effect until the storm system has passed and the roads have been cleared from curb to curb.

All vehicles must be removed from city streets during the duration of the snow alert.  

Lake County and many other counties are in a Winter Storm Warning that is in effect until 6:00 on Wednesday morning.  Heavy snow and winds will continue throughout the storm.  


Due to accumulating heavy snow and sustained high winds causing blizzard-like conditions and extensive drifting, Interstate 90 has been closed (eastbound and westbound) from Chamberlain (exit 265) to Sioux Falls (Marion Road/exit 395) and Interstate 29 (northbound and southbound) has been closed from the I-29/I-90 Interchange in Sioux Falls to Brookings (exit 132) as of 8:45 a.m. on Tuesday, Jan. 3, 2023.

SDDOT snow plows are having difficulty clearing roads due to near zero visibility and accumulating snow, with some plows becoming stuck with the high accumulation of snow on the lanes of traffic.

SDDOT anticipates the I-90 and I-29 closures to remain in place throughout the day on Tuesday, Jan. 3, 2023. Conditions are expected to improve this afternoon. Officials will continually assess conditions to determine when I-90 and I-29 can be reopened safely.

No Travel Advisories are also in place for numerous state highways in the central and southeastern portion of South Dakota with some becoming impassable.

Motorists are asked to avoid travel as blizzard-like conditions are making travel hazardous.

SD511 Notifications:
For the latest on road and weather conditions, please visit or dial 511. Sign up for customized notifications on for this free service that allows you to receive text messages and/or email notifications about road closure updates and travel advisories along routes of your choice.

To access the latest information, please click on the Winter Storm Information graphic on the homepage of the SDDOT website at

January 3, 2023