Denbighshire County Council says the A525 Nant y Garth Pass is scheduled to re-open at around 7pm this evening (Friday) – over a week ahead of schedule.
The road has been closed since Monday morning to allow contractors Tilhill to carry out essential safety and maintenance work in forests next to the A525.
The road was initially scheduled to close for two weeks, with a view to re-opening sooner if at all possible.
The work has progressed quickly by Tilhill, and the council, together with some local landowners, decided to carry out their own works during this closure period, to avoid needing to close the road at a later date.
As the work by Tilhill has progressed quicker than expected, the road can now re-open to traffic on Friday evening, with diversions lifted.
Traffic lights will remain in place for other necessary works along the route, with only slight delays expected.
The council says it would like to thank local residents for their patience and understanding while this vital work has taken place and to road users for their co-operation while the road was closed.