Traffic Wales have confirmed both lanes of the A55 have now been reopened between J22 and J23, and are expected to remain so for the Bank Holiday weekend.
But a 40mph speed limit will remain in place in both directions while the operation continues to remove fuel from the cargo ship that ran aground at Llanddulas.
The owners of the HV Carrier, which ran aground on the north Wales coast last week, have said it is going to be demolished.
Work is continuing to remove the fuel on board the stricken cargo ship on the North Wales coast.
Commuters in Colwyn Bay have been dealing with long tailbacks after police closed the A55 to deal with the tanker that ran aground.