A lorry overturned on an A14 roundabout on the outskirts of Felixstowe.
The Dock Spur roundabout, which leads onto Port of Felixstowe Road, remains closed by police after the HGV tipped over at the junction.
The road is closed between junction 62 and junction 60.
The Norfolk & Suffolk Roads and Armed Policing Team (NSRAPT) has warned motorists to expect delays while the vehicle is recovered.
The recovery of the HGV is complex as the load needs to be transferred to another vehicle.
It is not known if the driver of the lorry suffered any injuries in the incident.
There are lengthy queues between the Port and Felixstowe and the Dock Spur roundabout, according to the AA traffic map.
For up-to-date information about the county's roads, visit our LIVE Suffolk traffic map.
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