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.
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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