The A14 westbound is now clear following a five-car crash at Stowmarket.
Officers received the call at 8.23am and had the road clear by 9.30am.
A spokesman for Suffolk Constabulary said there were no reports of any injuries.
The crash happened by junction A1308 and caused one lane to be blocked.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here