CAHOKIA HEIGHTS, St. Clair County, Ill., Nov. 2, 2026 — Two people died on Saturday night, October 31, in a rollover crash on northbound Interstate 255 in Cahokia Heights, according to Illinois State Police.
The crash happened at about 7:10 p.m. near Milepost 11 on northbound I-255. A white SUV reportedly lost control, rolled over several times, and came to rest in a ditch alongside the interstate.
Both the driver and a passenger were pronounced dead at the scene. Their identities had not been released as of this writing. No cause for the loss of control had been confirmed.
Crews shut down the two left lanes of northbound I-255 while they worked the crash site. All lanes reopened by about 8:20 p.m., according to the state police report. The crash remains under investigation.
We are deeply sorry for the losses suffered by the victims' families.
More on Crashes in Cahokia Heights, IL
This fatal crash happened on Interstate 255 in Cahokia Heights, IL. We cover crashes across St. Clair County as they're reported, and you can browse the latest in our St. Clair County accident reports.
Frequently Asked Questions
Why are rollover crashes especially deadly?
A rolling vehicle can throw unbelted occupants against the roof, windows, or pavement, and the cabin itself can cave in as the vehicle tumbles, raising the risk of serious head, neck, and spine injuries.
Which vehicles tend to roll over most?
Taller, narrower vehicles such as SUVs, pickups, and vans have a higher center of gravity, which makes them more likely to tip and roll than low, wide passenger cars.
Does wearing a seat belt change the outcome in a rollover?
Yes. A seat belt keeps an occupant in place during the roll, cutting the chance of being ejected or struck inside the cabin, which are the most common ways people are killed or badly hurt in these crashes.
What is meant by a "tripped" rollover?
It happens when a vehicle's tires catch on something, such as a curb, soft shoulder, or guardrail, and the sudden sideways resistance flips the vehicle, as opposed to a rollover caused purely by sharp steering at speed.
