An Amtrak engineer said that he was worried about the curve along the Point Defiance bypass line in DuPont prior to the deadly train crash in December.

Mountain States & Southwest Mountain States & Southwest Construction News Digging Deeper | Transportation In Phoenix, Crews Thread Needle With $730M Broadway Curve Revamp By Scott Blair, Editor-in ...

National safety board calls out the “diffusion of responsibility” by four rail agencies that didn’t challenge an unsafe curve design of the track near DuPont where the derailment occurred.