MICHIGAN CITY, Ind. — More than 40 vehicles, half of them semitrailers, collided amid whiteout conditions in a massive highway pileup that left three people dead and more than 20 others injured — at least one critically — in northwestern Indiana, police said Thursday.
The pileup on Interstate 94 eastbound began Thursday afternoon near Michigan City, about 60 miles from Chicago, according to Indiana State Police, and at least one person was trapped in a vehicle for hours.
I-94 is the main highway heading east from Chicago to Michigan and Indiana, and the main thoroughfare between the nation’s third-largest city and Detroit. Traffic was backed up for hours in frigid snowy conditions, though state police said one westbound lane was open late Thursday.
Photos of the scene showed semitrailers and mangled passenger vehicles jammed together the width of the highway near an overpass. Some passenger cars were sandwiched in the wreckage. Full story for BostonGlobe.com subscribers.