There are heavy queues on the A47 following a crash near Caistor St Edmund.
Police were called to the scene just before 3pm following a four-car crash on the eastbound carriageway.
The four vehicles were a BMW, a KIA Sportage, a VW golf and a Vauxhall Astra van.
The road is blocked between A140 Ipswich Road to A146 Loddon Road, near Trowse.
The crash was damage only, with no reports of injuries.
Vehicle recovery was called at 4pm and police remain at the scene as of 4.10pm.
There is a long queue on the eastbound carriageway to the junction between the A47 and Ipswich Road.
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.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here