Commuters on the Stevenson Expressway had to swerve and slow down after a truck spilled septic sludge across the southbound lanes of I-55. The mess caused a major headache for drivers, with traffic crawling and cars dodging slick patches. It’s not every day you see a highway transformed into a slippery obstacle course! Cleanup crews worked quickly, but many are wondering how spills like this can be prevented in the future. Have you ever experienced a bizarre road hazard during your daily drive? Let’s hear your wildest traffic stories! #Transportation #ChicagoTraffic #StevensonExpressway