UPDATE: As of 2:35 p.m. I-74 eastbound at milepost 166 is now back open. Scene clear.
EARLIER: According to the Illinois State Police, I-74 eastbound is closed at milepost 166 (Piatt County).
Troopers are on scene investigation a traffic crash.
All traffic is diverted to the eastbound off-ramp at Mansfield. The road closure is estimated at 2 hours.