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Traffic heading over the Dartford Crossing into Kent is now moving freely following the completion of emergency repairs.
Three lanes were closed over the QEII Bridge, with drivers stuck in a standstill due to the work.
Delays lasted for about an hour as traffic picked up in the early morning.
But the roadworks have now been removed and all four lanes over the crossing are open.
Congestion which backed up to Junction 30 of the M25 has been cleared as a result.
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