Long queues are forming on the Dartford Crossing approach due to a crash on the M25.
Two lanes are closed anti-clockwise and traffic is stretching all the way back towards Junction three for the Swanley Interchange.
It's due to a crash between that junction and junction 2 for the Darenth Interchange, which connects to the A2.
National Highways says two out of four lanes are closed creating delays of up to 20 minutes owing to a road traffic collision.
Police have been approached for comment.
