NTSB hears from witnesses on deadly Amtrak crash onto I-5 near DuPont

SEATTLE -- Federal investigators are hearing from witnesses as they look into last year's Amtrak train derailment south of Seattle that killed three people and injured dozens.

The National Transportation Safety Board is taking testimony on the Dec. 18 crash in Washington D.C. Tuesday. The investigative hearing is scheduled for two days.

The Amtrak train was recorded at 78 mph as it rounded a curve in a 30-mph zone and derailed from a highway overpass near DuPont, Washington, spilling cars onto Interstate 5 below.

The train was on its first revenue run on a new route from Tacoma to Portland, Oregon.

Officials with the Washington Department of Transportation, Sound Transit, Amtrak and the Federal Railroad Administration are scheduled to provide testimony.