Editor's Note: As of 8:45 a.m., lanes had reopened. Our latest story can be found here. Our original story continues below.
Inbound and outbound lanes on the Eisenhower Expressway (I-290) were closed early Monday morning and heavy delays were expected after a pedestrian on the roadway was struck and killed overnight, the Illinois State Police said.
NBC 5's Lisa Chavarria said the crash, which involved an SUV and a pedestrian, took place around 4:20 a.m. According to ISP, the pedestrian, an adult male, was struck and killed while "in the roadway" in the outbound lanes. After being struck, the pedestrian was sent into the inbound lanes, officials said.
As of 5 a.m., ISP said traffic was being diverted in both directions, with major backups reported. In the outbound lanes, traffic was diverted at 9th Avenue, ISP said, with traffic in the inbound lanes diverted at 25th Avenue.
As of 5:30 a.m., inbound drive times on I-290 had reached upwards of 75 minutes, Chavarria reported, with traffic backing up "well past Wolf Road." On the outbound side, drive times were as high as 90 minutes.
As the morning went on, those travel times increased.
"If this is your route in, do not take the Eisenhower Expressway," Chavarria warned.
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According to ISP, both the I-290 inbound and outbound lanes could remain closed through the morning commute as an investigation continued.
At 6:45 a.m., photo and videos from the scene showed heavily backed up traffic, with multiple state vehicles on the highway, as well as a badly damaged SUV with a broken windshield and heavily-dented hood.
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This is a developing news story that will be updated as more information becomes available.