Several Hospitalized After Tanker Crash on Interstate 29 and Hazardous Materials Spill [Mound City, MO]

Police Investigate Crash on Interstate 29 in Mound City

MOUND CITY, MO (September 18, 2026)— Several people were hospitalized in a crash on Interstate 29 Thursday morning after a tanker overturned and released hazardous materials near Mound City, according to the Missouri State Highway Patrol.

Authorities said the tanker was carrying sulfuric acid suspended in nitroglycerin when it overturned on I-29. Another vehicle traveling on the interstate subsequently struck the tanker.

The crash happened approximately four miles south of the Mound City exit and five miles north of the Oregon, Missouri, exit.

According to MSHP, three or four people were taken to an area hospital after being exposed to a chemical plume released following the crash.

Officials said foggy conditions were present at the time. A spokesperson said the materials involved are reactive in water and that the conditions contributed to the formation of a sulfuric acid and nitroglycerin plume.

Authorities temporarily evacuated homes and businesses within a one-mile radius of the crash as a precaution. The Mound City School District also canceled classes Thursday because of uncertainty surrounding the incident.

The Missouri Department of Natural Resources and cleanup contractors later used a drone to confirm that the tanker was no longer leaking. Crews emptied the tanker and returned it to an upright position.

Workers are using lime to absorb remaining material in the median. Officials said crews will eventually replace contaminated material with dirt and reseed the affected area.

I-29 has reopened, although one lane in each direction remains closed while cleanup operations continue.

Officials hope to remove the hazardous material by Friday, but restoration work could extend into the weekend.

Troopers are asking motorists traveling through the area to use caution while cleanup crews continue working.

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Injured or Exposed to Hazardous Materials in a Missouri Truck Crash? Sweet Lawyers Can Help

A tanker crash involving hazardous chemicals can create serious risks not only for the people directly involved in the collision but also for nearby motorists, residents, emergency responders, and businesses.

We hope everyone hospitalized following this I-29 incident receives appropriate medical care and experiences a safe recovery.

Chemical exposure can present different health concerns depending on the substance involved, the duration of exposure, and the concentration of the material.

Anyone who develops breathing problems, skin or eye irritation, dizziness, nausea, or other concerning symptoms following exposure should consider seeking appropriate medical attention and following the instructions of healthcare professionals and public safety authorities.

At Sweet Lawyers, we understand that accidents involving commercial trucks and hazardous materials can be especially complicated.

Investigations may involve the trucking company, cargo records, vehicle maintenance information, driver records, cleanup documentation, environmental agencies, and other evidence related to how the crash and chemical release occurred.

People affected by such an incident may also face medical expenses, missed work, transportation disruptions, property concerns, or uncertainty about whether additional treatment or monitoring may be necessary.

Keeping copies of medical records, photographs, official notices, receipts, insurance communications, and other documents related to the incident may help establish how the event affected those involved.

An experienced personal injury attorney can review available information and explain what options may apply based on the specific circumstances. Every incident is different, and no particular legal outcome can be guaranteed.

Sweet Lawyers is committed to providing compassionate, clear, and attentive support to people affected by serious transportation accidents.

To learn more about the firm’s personal injury services, visit the Sweet Lawyers official website.

If you or a loved one suffered injuries or harmful exposure following a truck or hazardous-material collision, Sweet Lawyers can help you better understand the legal process while you focus on your health and recovery.