The A12 has fully reopened after police responded to a "serious" accident on the southbound carriageway.
Essex Police closed the road in both directions following the collision, between junction 28 for Colchester North Interchange and junction 26 for Eight Ash Green, earlier this afternoon.
Officers from Essex Police asked motorists to avoid the area.
The northbound carriageway reopened shortly after, although lanes one and two on the southbound carriageway were closed for several hours.
Highways England has confirmed the road is now fully reopened.
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