Trains eventually moved through the area slowly but commuters traveling on the Union Pacific West Line from Ogilvie Transportation Center downtown faced delays of about an hour and a half.
"Any time something happens between 3 and 3:30, it's hard to get buses to transport around the station. It causes severe delays, and they will probably last throughout the evening, because it takes a long time for the equipment to be in the right place at the right time,"said Metra spokesperson Judy Pardonnet.
No serious injuries were reported.