At least 50 people were injured after a concrete walkway over a highway in front of Lowe's Motor Speedway collapsed as fans left the race.
About 30 feet of the 15-foot-high walkway that spans the four-lane highway and connects the track to a parking lot collapsed at about 11:15 p.m. The bridge snapped at the center and was folded in half on U.S. 29.
Of the approximately 50 people injured, 12 were airlifted to a hospital in Charlotte. The rest were taken by ambulance to Concord and Charlotte hospitals, said Charlotte Fire Department Captain Rob Brifley.
He said there were no fatalities at the scene.
Track president H.A. "Humpy" Wheeler said 75 people were on the bridge when it collapsed.
Ed Walker of Columbia, S.C., said he crossed over the bridge and heard it snap.
"Just a lot of people went down and some of them were elderly so you don't know how bad it is," he said. "People were hollering."