Drivers face queues for five miles this morning due to an accident at the Dartford Crossing.
There are queues of up to 30 minutes because of an accident that involved a motorbike on the M25 between Junction 1 and the crossing into Essex.
There is congestion on M25 stretching back to J3 for the Swanley Interchange and on the A2 to Bean Interchange For Bluewater.
The West tunnel was reopened at 7.05am and all lanes have been re-opened.
A spokesman for Kent Police said: "The western tunnel at the Dartford Crossing is currently closed following a collision between a motorcyclist and a van at 6.10am today.
"The eastern tunnel is open but the incident is causing congestion and delays for motorists travelling from Kent to Essex, which is likely to continue for the next several hours."
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