Television reports showed Stafford's vehicle and picture of him walking away from the scene.
According to the report, Stafford was on his way to practice when a car hauler ahead of him hit the bridge on the Southfield Freeway in Detroit, around 6 a.m.
A Lions spokesman confirmed to the Detroit Free Press that Stafford did not see the collapse but his vehicle was one of the first to come upon the bridge after the collapse. Stafford was not hurt and made it safely to the Lions facility.
The Lions (2-1) play the New York Jets (1-2) on Sunday.
- Scooby Axson