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.
