A fiery crash that left a semitrailer hanging off a bridge closed northbound lanes of State Highway 121 near Carrollton Parkway on Tuesday afternoon.
The crash was first reported at about 4 p.m. Authorities later opened up one main northbound lane on the Sam Rayburn Tollway.
The southbound lanes were not closed.
The condition of the driver of the 18-wheeler and anyone else involved in the crash was not immediately known.