Police are appealing for witnesses to a five vehicle collision on the A13 in Corringham.
Officers were called to the eastbound carriageway at 8.50am on Monday (June 27) with reports three trucks and two cars were involved.
One of the truck drivers, a 49-year-old man from London, was taken by air ambulance to the Royal London Hospital with serious internal injuries. His condition is described as serious but stable.
Witnesses to the collision are asked to contact Pc Laura Shelley at Chigwell Roads Policing Unit on 101 or email firstname.lastname@example.org