The NSW Transport Management Centre said Kings Highway has been cleared after a landslide at Pooh Corner earlier on Monday.
Traffic was affected in both directions for a number of hours.
Emergency services, including the NSW Road and Maritime Services, and the local council attended the scene.
Pooh Corner is an iconic landmark on the highway decorated with Winnie The Pooh toys.
Live Traffic NSW reported that the landslide started at 12.07pm.