The A14 has now fully re-opened at Bury St Edmunds following earlier delays when a lorry shed its load.
Suffolk police were called to the scene at J43 at 6.30am on Tuesday morning after what has been described as large, heavy metal crowbars were shed from a lorry.
Traffic was stopped for a time as Suffolk police dealt with the incident.
At its height queues trailed for around 6 miles back to J46 at Thurston.
A spokesman for Suffolk police said that damage is thought to have been caused to the road's central reservation and so the road could take longer to fully re-open.
Shortly after 9am Suffolk police announced that a crane would be brought onto the road to clear the metal poles and that both lanes of the westbound carriageway would need to stay shut during this time.
Queues eventually eased and police were able to re-open the road fully at midday.
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