St. George, UT — January 12, 2026, one person was killed in a truck accident just before 7 a.m. on Interstate 15/Veterans Memorial Highway.

Authorities said a flatbed Mack truck loaded with construction materials was heading north when it apparently veered off the road and overturned near the Brigham Road exit.

The truck driver, a 66-year-old man whose name has not been made public yet, died from injuries suffered in the crash, according to authorities.

Authorities have not released any additional information about the Washington County crash at this time. The accident is still under investigation.

Commentary by Attorney Michael Grossman

When people hear that a flatbed truck loaded with construction materials overturned and killed its driver, the first question they often ask is: How does something like that happen? Was it a mechanical failure? Did something shift in the load? Did the driver lose control for some reason? These are the kinds of questions that don’t get answered just by looking at skid marks or debris; they require a deeper investigation.

Right now, it’s not clear why this particular truck veered off I-15 and overturned. Depending on the circumstances, that fact alone opens several important lines of inquiry. If the truck ran off the road due to a sudden maneuver, was the driver trying to avoid something or someone? If it drifted gradually, could fatigue or a medical emergency have been involved? These possibilities aren’t just speculative; they’re exactly the types of scenarios that engine control module (ECM) data, dash cams and driver phone records are designed to help clarify.

Then there’s the cargo itself. Construction materials can be heavy, uneven and prone to shifting if not properly secured. If the load wasn’t balanced or the tie-downs failed, that could cause a rollover all by itself, even without driver error. But we won’t know unless someone asks: Who loaded the truck? Were the right procedures followed? Were the materials secured according to FMCSA regulations? I’ve handled cases where the people responsible for loading a trailer had no business doing the job, and their mistakes put everyone on the road in danger.

And while the focus often lands on the driver, the bigger picture usually involves the company that put that driver and that load on the road in the first place. Did they vet the driver’s qualifications? Was this his regular route or a new assignment? Was he rushing to meet a delivery window? These aren’t abstract concerns; they’re practical realities that, in my experience, often reveal how preventable a crash really was.

At this point, with so little publicly known, it would be premature to place blame. But it’s not too early to say what kind of investigation needs to happen. That means recovering onboard data, reviewing cell phone use, examining cargo loading records and determining whether the equipment was in good working order. Without that kind of evidence, we’re left guessing, and that doesn’t bring answers or accountability.

Key Takeaways:

• It's still unclear what caused the truck to leave the roadway and overturn. Several possible explanations remain unconfirmed.
• Cargo-related factors, such as shifting or improper loading, may have contributed and must be investigated.
• Key evidence includes ECM data, in-cab cameras, phone records and loading documentation.
• Responsibility could rest with more than just the driver, depending on company practices and oversight.
• A thorough investigation is needed to determine how this crash occurred and who, if anyone, failed to do their job.