The coast-bound carriageway on the M2 is currently closed while vehicles from a car crash are being recovered.
Car passengers have been stuck in queues for hours and some have been walking along the hard shoulder of the motorway.
The two vehicle collision involved a white Renault lorry and a black Ford Transit.
The man was taken by air ambulance with serious injuries and another man had minor injuries.
More top news
More than 70 firefighters have been tackling a fire in a thatched cottage in Longparish, Hampshire.
Police have released CCTV footage of the last known movements of 21-year-old University of Brighton student Janet Muller.
Wednesday night's weather for the east of the region