Semi Truck Spills Hydrochloric Acid After Flipping on I-90 in Illinois

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Commuters in McHenry County, Illinois, faced a major traffic disruption early Friday when a semi truck hauling hydrochloric acid overturned on Interstate 90 near Harmony. The incident occurred just after midnight, causing lane closures as hazmat crews arrived to secure and clean up the scene, according to NBC Chicago.

Emergency Response and Traffic Diversion

The Illinois State Police confirmed the truck was transporting hydrochloric acid, a strong and corrosive chemical. While no injuries were reported, the cause of the crash and the extent of the spill remain under investigation. Fox 32 reported that authorities have advised drivers to avoid the area and use alternate routes to reach their destinations.

Impact on Traffic and Safety Measures

Westbound traffic on I-90 was diverted off the tollway at Illinois Route 23, with drivers redirected to re-enter the highway beyond the entrance ramp. Emergency vehicles were on-site, and traffic backed up significantly due to the accident.

Hydrochloric Acid: Uses and Dangers

Hydrochloric acid is a versatile industrial chemical used in steel processing, the production of PVC and polyurethane foam, and the manufacturing of calcium chloride. It also serves as a disinfectant and slimicide in paper production, and is found in household cleaners, pool maintenance, and food manufacturing. According to the Chemical Safety Facts website, the acid is a clear, poisonous liquid and highly corrosive, causing severe tissue damage upon contact.

Public Health and Safety Concerns

MedlinePlus notes that hydrochloric acid is a caustic chemical that can cause immediate and severe burns to the skin and eyes. While the spill’s full impact is still being assessed, the presence of such a hazardous substance on a major highway poses significant risks to both public health and safety.

Ongoing Investigation

Authorities continue to investigate the cause of the accident and the amount of acid spilled. Until further details are released, drivers are urged to avoid the area and follow the recommended detours to ensure their safety and minimize disruption to the region’s transportation network.