There are serious delays on the A14 westbound at Claydon after an Audi and a Vauxhall van were involved in a collision.
The crash happened just after 1pm, just over a mile from a where a lorry with a blown-out tyre was causing earlier congestion.
Three fire engines were called to the scene from Princes Street, Ipswich and Stowmarket, although they were stood down shortly afterwards.
One person involved complained of neck pain and an ambulance was called.
The road had been closed while police dealt with debris, although lane two has since re-opened. Drivers are asked to take care and slow down when approaching the incident.
Traffic maps currently show queues heading back into Ipswich at junction 53 near Whitehouse Asda.
Emergency services remain on scene.
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