Queues are forming on the A12 after a lorry and a car collided at Boreham.
The northbound carriageway was shut between Boreham and Hatfield Peverel with traffic queuing back towards junction 18 at Sandon.
An ambulance and an ambulance officer were sent to the scene at 10.40am today.
One patient has been taken to hospital with minor injuries.
Two lanes have now been opened.
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 The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.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