Traffic remains blocked on the Stevenson Expressway at the Tri-State Tollway after a semi truck collision this evening near Indiana Head Park.
About 5 p.m. the semi was inbound on I-55 between the County Line Road and La Grange Road exits and near the northbound Tri State Tollway when it crashed, according to Illinois State Police District Chicago Trooper Seth Stephens.
A witness reported seeing both the cab and trailer flipped on its side and another vehicle being involved.
Stephens said there was at least one person injured, but he did not have details immediately.
As of 7:20 p.m., motorists are being diverted and all northbound lanes remained closed in the area, the trooper said.
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