Deadly I-55 Crash Causes Major Memorial Day Weekend Traffic Nightmare

**Deadly Crash Shuts Down I-55 Southbound During Memorial Day Weekend** A fatal rollover crash on Interstate 55 near Cass Avenue in Darien, Illinois, brought traffic to a standstill Friday afternoon, May 23, 2025. Illinois State Police confirmed at least one death and reported that all southbound lanes were closed for investigation. "Chopper 7 was over that scene where you could see a truck rolled over next to the southbound lanes," a news reporter stated. The truck has since been removed, but the highway remains closed, causing significant traffic congestion during the busy Memorial Day weekend. Authorities are diverting traffic at Route 83, and it is expected to remain closed for an extended period. The incident underscores the challenges of holiday travel as millions of people are on the roads. The cause of the accident is under investigation.