It happened around 10:00 Friday night on the 800 block of New Castle Avenue.
The victim is identified as 39-year-old Colleen Anderson.
Authorities received reports that a woman walked onto the railroad tracks as the train was approaching.
When officers arrived they found Anderson laying on the tracks unresponsive. She was taken to an area hospital where she was pronounced dead.
The train continued an unspecified distance before stopping.
An investigation into the incident is still underway.