A roof has been ripped off a double-decker bus in Lancaster.
Lancashire Police said there were no passengers on board when the Stagecoach vehicle struck a footbridge on St George’s Quay just after 11.30am.
The road was closed and an ambulance and the fire service were at the scene.
Highways officials were also attending to assess damage to the bridge.
A spokeswoman for Lancashire Police said emergency services were called at 11.34am.
She said there were no injuries.
The bus driver was treated at the scene for shock and the vehicle was severely damaged.
A spokesperson for Stagecoach said: “Safety is our absolute priority. The bridge involved is not part of a planned bus route and we will now investigate what has happened on this occasion as a matter of urgency.”