From the Illinois State Police:
Update: 11:30 PM: All eastbound lanes on I-74 have been re-opened
Earlier: 9:40 PM: IDOT is currently diverting I-74 Eastbound traffic off the interstate at Exit 192 for crash scene processing.
Earlier: As of 8:15 PM, EMS and ISP personnel are on scene with a fatal crash on I-74, eastbound, just east of Milepost 193. At this time the left eastbound lane is open, but traffic is backed up as a result of the crash. Motorists are asked to please use extreme caution when approaching the area and expect delays. Please avoid the area if possible.