Jefferson City, MT — July 11, 2025, a woman was killed due to a pedestrian versus truck accident at approximately 11:15 p.m. along Interstate Highway 15.

According to authorities, the accident took place in the southbound lanes of I.H. 15 in the vicinity approximately three miles to the south of Jefferson City.

Details surrounding the accident remain scarce. Officials indicate that, for as yet unknown reasons, a woman who had been on foot in the vicinity was struck by an 18-wheeler. The pedestrian reportedly sustained fatal injuries as a result of the collision. Additional information pertaining to this incident—including the identity of the victim—is not available at this point in time. The investigation is currently ongoing.

Commentary by Attorney Michael Grossman

When someone is struck and killed by an 18-wheeler while on foot along a remote stretch of interstate late at night, the most pressing question is why was a pedestrian on the highway to begin with? Pedestrian-versus-truck crashes on interstates are rare but almost always fatal, and they raise serious questions about visibility, timing, and whether either party had a realistic chance to avoid the collision.

In many cases like this, the pedestrian may have been walking along the shoulder, trying to cross the roadway, or attempting to flag down help after a breakdown. But without confirmed details, it's important not to make assumptions. What matters is whether the truck driver saw—or could have seen—the pedestrian in time to respond. That hinges on lighting conditions, driver attentiveness, and how the pedestrian entered the truck’s path.

Interstate highways are not designed for foot traffic. There are no sidewalks, no pedestrian crossings, and often no lighting—especially in rural areas like this one. At 11:15 p.m., visibility would have been limited to the reach of the truck’s headlights, and anything outside that narrow field might have been practically invisible until it was too late. That’s why black box data and dash cam footage will be critical. If the truck swerved, braked, or showed no change at all, it will say a lot about whether the driver had any warning.

It’s also important to examine how the pedestrian got there in the first place. Was there a disabled vehicle nearby? Were there any reports of someone walking along the highway earlier in the night? In my experience, these factors often surface in the hours after a crash and help clarify whether the incident was the result of a distress situation or something else entirely.

From a legal perspective, the burden typically falls on the driver to operate with caution—but the conditions of the road and the actions of the pedestrian must be evaluated side by side. That’s the only way to determine whether this was truly unavoidable or the result of someone failing to account for obvious risk.

Key Takeaways

• The central question is why a pedestrian was present on the interstate at night and whether the truck driver had a realistic opportunity to avoid a collision.
• Visibility conditions, especially at 11:15 p.m. on an unlit highway, will be key in evaluating driver awareness and reaction time.
• Dash cam footage, black box data, and physical evidence at the scene will help reconstruct the moments leading up to the impact.
• Investigators should determine whether the pedestrian was involved in a prior vehicle issue or entered the highway unexpectedly.
• Responsibility in pedestrian-highway crashes depends on timing, visibility, and what each person could reasonably anticipate or avoid.