Fifteen cars were involved in the crash. There has been no word on injuries.
State police say there is a multiple-car pileup on northbound I-294 between Willow and Lake Cook Road.
The crash is in the express lanes, and the backup stretches as far as 7 miles, the Trib reported. It's forced some drivers to turn around and try to go south in the express lanes.
At this hour, cars are backed up beyond Touhy Avenue, more than 10 miles away.