Atlanta Fire Rescue notified the public about the fire with this Instagram video just before 7 p.m. ET.
The fire department later tweeted that the bridge had collapsed.
The fire was put out by about 8 p.m., Atlanta Mayor Kasim Reed tweeted.
There were no reports of injuries to drivers or emergency personnel,reported the Atlanta Journal-Constitution.
It wasn’t immediately clear what caused the blaze, but Georgia Gov. Nathan Deal said authorities were investigating the possibility that PVC piping had caught fire, NBC News reported.