The A1064 near Billockby is partially blocked following an accident.
There is queuing traffic in both directions between the Stokesby turn off and the Martham turn off.
The accident is impacting traffic between Acle and Caister-on-Sea.
Police are reportedly at the scene and diversions are in place, according to posts by members of the public on traffic and travel groups.
The accident was first reported at 1pm and traffic continues to build in the area.
For up-to-date information about the county's roads, visit our LIVE Norfolk traffic map.
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