Bent track a factor in Montana Amtrak crash that killed Georgia couple on 50th-anniversary trip

Workers stand near train tracks, Sept. 27, 2021, next to overturned cars from an Amtrak train that derailed a few days prior near Joplin, Mont., killing three people and injuring others. A piece of track was bent along a curve near the accident site and the misalignment got worse as freight trains traveled over the area, the National Transportation Safety Board said in investigative documents released on Tuesday, Feb. 21, 2023. (AP Photo/Ted S. Warren, File)

Investigators probing a fatal 2021 Amtrak derailment in Montana disclosed Tuesday that the railroad track was bent along a curve near the accident site, and the problem got worse as freight trains traveled over the area before the crash.

Details on the bent track were included in hundreds of pages of investigative documents released by the National Transportation Safety Board. The three passengers who died and two who were seriously injured were in, or had just been in, an observation car that ended up on its side, the investigation found.

Railroad safety practices are facing renewed scrutiny after a fiery freight train derailment released toxic chemicals in Ohio. The Feb. 3 crash of a Norfolk Southern train forced evacuations and raised public health concerns.