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Motorists are facing heavy traffic on the A2 due to an overturned car near Bean.
It is blocked coast bound because of a three car collision at the B255 Bean Interchange and two of three lanes are closed.
Traffic has been described as "a car park" by some drivers.
Highways England tweeted: "A2 coast bound at Bean (Bluewater) Junction we have a three vehicle road traffic collision, Red X are in effect @kentpoliceroads @kentfirerescue are on scene with ourselves. please take care through the area."
Police spokesman Martin Very said: "Police were called at around 8.20am regarding a report that a car had overturned on the coastbound carriageway of the A2 near Bean.
"Officers were joined by the fire and ambulance services at the scene where a woman was treated for injuries. She was taken to a local hospital for further medical attention."