State police say a crash involving 12 vehicles on I-280 in West Orange left seven people injured.
According to state police, a flatbed tractor-trailer hauling bags of cement struck the center median Monday around 6 p.m. near milepost 9.6.
State police say the truck's cab then separated from the trailer and went airborne, showering other vehicles with flying debris.
Seven people were being treated at hospitals for undisclosed injuries.
Authorities say none of the injuries were considered life-threatening, but further details were not disclosed.
The highway's eastbound lanes were closed for about two hours after the crash, creating major traffic delays in the area.
AP wire services helped contribute to this report.