Drivers are being advised to avoid the A47 near Acle.
One lane is closed near the Acle roundabout.
According to the AA Traffic Map, the closure is being caused by a stalled vehicle on the road.
There is some traffic in the area, with queues building on the surrounding roads.
Yesterday there was an eight-car crash on the Acle Straight, which caused hour-long queues for drivers.
For up-to-date information about the county's roads, visit our LIVE Norfolk traffic map.
Join our Norfolk Travel Information group on Facebook for all the latest traffic news in Norfolk.
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