Illinois State Police say the accidents happened Thursday morning, causing lengthy delays during rush hour. Authorities say five separate accidents occurred.
The Illinois Department of Transportation is making plans for a bridge demolition in Madison County.
According to a news release from the St. Louis County Police Department, police were advised that protestors were planning to march to Interstate 270 to try to shut down the highway.
Renell Clower of St. Louis was crossing the westbound lanes in the Florissant area about 2:30 a.m. Tuesday when he was struck by the tractor-trailer.
On September 4 and August 18, a few young men drove a dark SUV into neighborhoods, backed the car into a driveway or garage, broke in, loaded up the car and took off.
One crash on Friday tied up traffic on northbound I-270 in Florissant. The other affected Route 67 travel near Festus on Friday.
Prosecutors in Madison County have charged 24-year-old Travis King of New Douglas with two felony DUI-related counts.
To avoid delays, motorists need to alter their travel times by leaving earlier for their daily commute.
The Missouri State Highway Patrol says the crash happened just after 1 a.m. Sunday when a pickup truck rear ended an SUV packed with people.
Changing advisory speeds caution motorists of slowed traffic ahead.