Dramatic footage has captured the moment a motorway collapsed during heavy rain in the northwest Italian city of Genoa on Tuesday killing at least 30 people.
Vehicles and debris fell 45m on to the railway tracks, buildings and a river as rescue teams scrambled to find survivors.
One witness described the sound of the bridge collapsing like "thunder".
"We heard an incredible roar and first we thought it was thunder very close by," an unnamed witness told the BBC.
"We live about 5km from the bridge but we heard a crazy bang... We were very scared... Traffic went completely haywire and the city was paralysed."
