Wisconsin State Patrol responded to a 15-70 car crash just across the Illinois/Wisconsin border around 1:45 p.m., according to preliminary information for Illinois State Police.
Upon arrival, troopers found the interstate blocked northbound. Several semi-trucks and cars have been involved amid slippery conditions at the time of the accidents.
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Northbound traffic was being routed to Russell Road to the west Frontage Road to WIS 165 back to I-41, Wisconsin State Police said.
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Travelers were also advised to avoid the area, while WSP and supporting agencies work to investigate the crash and clear the roadway.
As of 5:30 p.m., all closures have concluded and I-94 westbound has reopened, state police said.
Many of the damaged vehicles have been towed away.
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