Pedestrian fatally struck overnight on I-70 in north St. Louis County near Route 115

What happened

A pedestrian was struck and killed late Tuesday night on Interstate 70 in north St. Louis County, prompting an overnight investigation and renewed attention on the dangers of people entering high-speed highways on foot.

The crash occurred at about 10:30 p.m. on Dec. 30, 2025, in the westbound lanes of I-70 near Missouri Route 115, in the area just south of St. Louis Lambert International Airport. Emergency responders pronounced the pedestrian dead at the scene.

Confirmed details from the investigation so far

• The pedestrian was a 40-year-old man from Topeka, Kansas. His name was not publicly released in initial reporting.
• The vehicle involved was a 2001 Ford Expedition driven by a 39-year-old woman from St. Louis.
• Investigators indicated the pedestrian was in the roadway at the time of the collision.
• The driver was not reported injured; the SUV was reported to have sustained substantial damage.
• The Missouri State Highway Patrol’s Troop C is leading the investigation.

Why crashes like this are difficult to prevent

Pedestrian fatalities on interstates often unfold with little margin for drivers to react. Unlike surface streets—where crosswalks, signals, street lighting, and speed enforcement are common—interstates are engineered for sustained speeds and limited access. When a person is on foot in travel lanes, even an attentive driver may have only seconds to detect and avoid a collision.

Investigations in these cases typically focus on a narrow set of verifiable questions: where the pedestrian entered the roadway, visibility and lighting conditions, the vehicle’s path and speed, whether the driver attempted evasive action, and whether any impairment or distraction factors are supported by evidence.

What drivers should know when a pedestrian is reported on the highway

Transportation safety guidance consistently emphasizes immediate risk reduction: slowing safely, increasing following distance, and avoiding sudden swerves that can cause secondary crashes. Motorists who see a pedestrian on a highway are also urged to contact 911 with location details, including direction of travel, nearest exit, and lane information when possible.

Investigators have not released information indicating additional vehicles were involved, and the case remains active.

What comes next

Authorities are expected to continue reconstructing the collision using physical evidence from the scene and standard crash-reconstruction methods. Additional details—such as the pedestrian’s identity and any contributing factors confirmed by investigators—may be released as the case progresses.