The road was closed from J19 A130 Colchester Road (Boreham Interchange) to J20A B1137 (Hatfield Peverel South). This led to congestion back at the J18 (Danbury) and via Springfield and Chelmsford. Traffic was diverted around the incident. READ MORE: 18-year-old quad bike rider dies after collision with A120 Hare Green Traffic website Inrix said: “The A12 is closed in both directions, the traffic in the queue due to a serious accident, many vehicles are involved between J19 A130 Colchester Road (Boreham Interchange) and J20A B1137 (Hatfield Peverel South). Congestion to J18 (Danbury ) and through Springfield and Chelmsford as traffic diversions. “ It is unknown at this time what he did to cause the injuries. The emergency services were contacted and we will inform as soon as we receive it. See updates about this incident as it happened on our blog below