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Traffic was being held on the A2 following a crash.
Queues are continuing to stretch along the eastbound carriageway near Dartford.
The crash, which is understood to involve multiple vehicles, took place between the A296 and the A2260.
Traffic was held following the collision at just before 9pm, and while it has been released two lanes remain shut.
A National Highways spokesperson tweeted: "Traffic has been temporarily stopped on the A2 eastbound between the A296 and the A2260 near Dartford due to a collision.
"Please be patient we'll get you moving again as soon as we can."