Bath's Churchill Bridge has reopened to traffic a week later than planned after heavy rain delayed repair work.
Bath and North East Somerset Council said essential waterproofing work had to be delayed as it needed the surface to be "bone dry" for a period.
Since the work started on 16 April, kerbing and footpath work has taken place on the bridge and its expansion joints have been replaced.
Churchill Bridge is a major route for motorists travelling from the south.
During the closure traffic has crossed the river at Midland Bridge with diversions via the Lower Bristol Road and Green Park Road.
Pedestrians and cyclists were able to use a footbridge behind Bath Spa railway station.