A driver was taken to hospital after a car crashed into a field off the A14 near Ipswich.
Emergency services were called to the crash in the eastbound carriageway just after 4.40pm on Wednesday.
A spokesman for Suffolk police said on Wednesday: "Officers are currently on the scene and the eastbound carriageway of the A14 will be closed from junction 58.
"A vehicle has left the road and gone through a fence and has come to rest on its side in a field."
The East of England Ambulance Service later confirmed the driver was taken to Ipswich Hospital for treatment.
The road reopened by 9pm.
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