The A47 was closed for several hours due to a police incident to the south of Norwich.
The major road was closed just after 6.30pm between Thickthorn roundabout and the B1108 Colney Junction.
This was due to concerns for the safety of a man.
Police, fire and ambulance crews attended the scene.
Heavy traffic was experienced in the area and drivers faced long delays to travel.
Bus travel was also disrupted following the road closure affecting First Bus and Konectbus services.
The incident was eventually resolved and a man was detained under the mental health act.
For up-to-date information about the county's roads, visit our LIVE Norfolk traffic map.
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