AN ambulance and a Stagecoach number 13 bus collided on the Wearmouth Bridge.
The driver of the ambulance was taken to Sunderland Royal Hospital with minor injuries, but no patients were in it at the time.
A spokeswoman for Northumbria Police said: “At 1.15pm we received a report of a crash between an ambulance and a single-decker bus between North Bridge Street and Dame Dorothy Street, in Sunderland city centre.
“The driver of the ambulance has been taken to hospital for treatment.
“It’s not believed anyone on the bus was badly injured. The roads were reopened shortly after 2pm.”