At least seven vehicles were involved in a crash Monday morning on Interstate 35W, MedStar officials said.
Six cars and one RV crashed into each other near Interstate 820, seriously injuring one person, a MedStar spokesperson said.
At least three ambulances have responded to the scene at the northbound express toll lanes on the freeway, records show. Thirteen other people also sustained minor injuries in the crash.
The northbound lanes of the freeway were closed for several hours due to the crash near Western Center Boulevard, according to the Fort Worth Fire Department.
Visibility had been severely reduced across much of the Dallas-Fort Worth area due to dense and thick fog Monday morning.
A Dense Fog Advisory had been in effect until 10 a.m. for the area.
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