Queue of around three miles have been reported near Mildenhall after a broken down car was hit by a lorry.
The incident happened around 1/2 mile from Fiveways shortly after 1.20pm.
A Vauxhall Zafira broke down on the road and was then hit by a lorry.
No one was in the car when it was hit.
A spokesman for Suffolk police said that the car had been in a live lane when it had broken down.
Attempts are being made to remove the vehicle to a nearby layby but there are around three miles of traffic reported in the area.
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