The Oxley Highway is closed in both directions between Mount Seaview and Yarrowitch due to fallen trees on the road.
Motorists are advised to avoid the area as the highway is expected to remain closed overnight.
Motorists who need to travel can consider using the Pacific Highway, Waterfall Way and the New England Highway instead.
Motorists are advised to allow plenty of extra travel time and take care in the area.
For the latest traffic information, download the Live Traffic NSW app, visit www.livetraffic.com or call 132 701.