A stretch of the A12, near Hatfield Peverel, was closed last night (Friday September 12) after a four car collision involving a minibus.
One person was injured after the collision which took place around 8.49pm and left the A12 shut between J20 B B1137 The Street Hatfield Peverel and J21 B1389 Hatfield Road Witham, heading northbound.
The injured person was taken to Colchester Hospital but is not thought to be seriously injured.
Essex police say that inquiries are continuing into the incident which left a silver Renault Megane people carrier on its roof in the fast lane of the motorway.
A silver Vaxhall Corsa, a Fiat Doblo and a Ford Ka were also involved in the collision which damaged the central reservation.
Motorists were held up in severe delays and the A12 was reopened at roughly 22.40pm.
Police joined paramedics and Essex fire and rescue at the scene.
Police were called to another collision on the A12 last night just hours beforehand near the same junction (20A northbound), at around 7.45pm, leaving another person injured.
A police spokesperson said: "A blue Peugeot 206 struck the central reservation barrier and a Mercedes car was also damaged.
"Officers dealt with the scene and one driver was reported for motoring offences. Minor injuries."