Three Forks, MT – August 20, 2025: Authorities are investigating a deadly train accident that killed Montana State University student Anna-Sophia Steigerwald. The 20-year-old from Littleton, Colorado, was struck by a train near the Milwaukee Fishing Access Site shortly after 4 p.m. on Wednesday.
The Gallatin County Sheriff’s Office confirmed that the incident is being treated as accidental. Deputies responded to the scene following reports of the collision. Officials have not released additional details about the circumstances surrounding the accident, and the investigation is ongoing.
Train accidents can occur due to several factors, including mechanical failures, track issues, signaling errors, or unsafe pedestrian crossings. Investigators are examining the site to determine what contributed to this fatal collision.
Authorities have not indicated whether any other individuals were involved or if additional factors played a role in the incident.