All phases of Operation Stack have now been lifted
This means both London-bound and coast-bound carriageways of the M20 are now open, following the closures between junctions 8 and 11.
There may still be residual delays in the area while the road network returns to normal.
Emergency measures brought in to deal with cross-Channel disruption caused by striking French ferry workers have been lifted.
Operation Stack was put in place on Monday after action by MyFerryLink staff shut the Port of Calais, leaving thousands of lorries parked on the M20.
Both London-bound and coast-bound carriageways are now open, following closures between junctions 8 and 11.
Police said there may still be residual delays on the road network.
MyFerryLink workers walked out on Monday over the sale of the company’s ferries to rival firm DFDS Seaways.
The strike was suspended on Thursday, with French union bosses promising there would be no further action until at least Tuesday.
Ferry operator P&O said it had resumed its normal 25 sailings a day between Dover and Calais, after the French port fully reopened.
Every day of disruption was costing the UK economy at least £250m – a figure based on a study last year which found business through the port was worth £100bn a year – according to Dover port chief executive Tim Waggott.