Two freight trains collided and derailed early Saturday in southeast Missouri, then triggered the collapse of a highway overpass when several rail cars struck a support pillar.
Seven people were injured, including two personnel on the trains and five individuals in cars on the overpass on Highway M near Scott City, about 120 miles south of St. Louis, NBC affiliate KSDK reported. All the injured were hospitalized and listed in fair condition.
The collision occurred before dawn at a rail intersection.
"One train T-boned the other one and caused it to derail, and the derailed train hit a pillar which caused the overpass to collapse," Scott County Sheriff's dispatcher Clay Slipis told Reuters.
The crash, which involved BNSF Railway Co and Union Pacific trains, also ignited a fire when diesel fuel leaked from one of the train engines, Slipis said.