UPDATE: 4:30 P.M.
Illinois State Police say they responded to a crash involving multiple vehicles on Interstate 57, north of Mt. Vernon at milepost 103, around 9:30 a.m. in a single lane construction zone.
ISP says a vehicle spun out in the roadway and a semi stopped to avoid hitting it. While stopped, the semi was rear ended by another semi, which was subsequently rear ended by another semi.
The second crash occurred at the same location when a passenger vehicle stopped to avoid the first crash and was rear ended by a second vehicle, which was then rear ended by a third vehicle.
No injuries were reported with either crash.
The roadway was closed for approximately 3 hours during the crash investigation.
ISP urges motorists to slow down and allow extra time for travel today as many roads are snow covered and hazardous.
JEFFERSON COUNTY (WSIL) -- A multi-vehicle crash in Jefferson County is blocking all southbound lanes of traffic.
Illinois State Police District 13 says the crash involves at least 10 vehicles and is located about 8 miles north of Mount Vernon.
Southbound traffic is being detoured at Illinois 161 (exit 109) to continue south on Illinois 37.