More than two dozen cars and trucks piled up in a chain-reaction wreck Wednesday on a slippery section of Interstate 94 in northern Indiana, closing a 6-mile stretch of the highway's westbound lanes, police said.

• Click here to view photos.

No serious injuries were reported, state police Sgt. Ann Wojas said.

Up to 3 inches of snow fell in the area during the night and snow was falling heavily at the time of the midmorning crash.

Wojas said the crash involved 15 cars and 12 tractor-trailer rigs about three miles east of the Michigan City exit on I-94.

"I know five of the semis are all mangled into one, and a couple of the trailers have been split open," Wojas said.

"I was coming down that hill there and all of a sudden I saw all these cars and trucks flaring left and right," Todd Skiles of Westland, Mich., told The (Michigan City) News-Dispatch. "Everybody started smashing up. Then I saw this semi coming from behind. If (the semi driver) wasn't such a great driver, this could've been a lot worse."

Wojas said more than 90 wrecks were reported Wednesday morning in her seven-county district, which includes interstates 80 and 94, and troopers in the Muncie-Marion area reported several crashes and slide-offs on Interstate 69.

"It's due to motorists driving too fast for the road conditions," state police Sgt. Rod Russell said.