The A1067 was blocked for almost two hours after a crash at Lenwade, where firefighters had to help free a woman from a vehicle.
Emergency services were called to the road just after 8.15am today.
The crash involved a Peugeot Partner van and a Ford Focus.
Firefighters from Earlham and Sprowston went to the scene and used hydraulic rescue equipment to get a woman out of one of the vehicles.
The woman, who was in the car with her family, including children, was taken to the Norfolk and Norwich University Hospital by the East of England Ambulance Service, but the extent of her injuries is not known.
The road had reopened by 10am.
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