The A11 southbound is now open following a four vehicle crash at Wymondham earlier this morning which injured one person.
Police were called shortly after 7am to reports of the crash on the A11 between Wymondham and Spooner Row. They were joined on the scene by fire crews from Wymondham, Attleborough and Hethersett who helped free one casualty from a vehicle.
The East of England Ambulance Service treated four patients at the scene and one woman was taken to the Norfolk and Norwich University Hospital with suspected leg and chest injuries. Her injuries are not thought to be life-threatening.
The southbound carriageway on the A11 between Wymondham and Spooner Rower was closed at the Mulbarton junction for over three hours causing long delays on the route.
Meanwhile police tweeted a warning to motorists across the county this morning about the hazardous driving conditions.
Norfolk police tweeted: '#Norfolkroads VERY WET roads this morning - standing water, several accidents - be careful and drive to the weather conditions..STAY SAFE'.
There were also crashes this morning on the A47 at Necton and the A47 outside of Norwich.
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