St. Clair County, IL (July 18, 2026) – A fatal collision closed northbound I-255 near I-64 in St. Clair County on Thursday after a southbound vehicle crossed the median and struck a northbound car. The accident happened shortly after 2:45 p.m.
The driver of the southbound vehicle lost their life at the site. The driver of the northbound car was taken to a hospital, but no information about that person’s injuries was released.
Northbound I-255 remained closed for several hours before traffic resumed. The circumstances surrounding the collision continue to be examined, and more information may be released as the investigation progresses.
We extend our sincere condolences to the family and friends of the deceased.
Why Median-Crossover Crashes Are Severe
Median-crossover accidents can result in serious outcomes because they frequently involve vehicles traveling in opposite directions. The combined force of both vehicles can significantly increase the risk of severe injuries or fatalities.
Investigators usually review roadway evidence, vehicle damage, weather conditions, and witness statements to better understand how these crashes occur. Road design, driver actions, and traffic conditions may also be considered. Drivers can help reduce risks by remaining attentive, maintaining control of their vehicles, and avoiding behaviors that could cause them to leave their travel lane.
