All northbound lanes are closed on the Pacific Highway in Coolongolook, south of Forster, due to a serious truck accident at Willina Road.
Two of three southbound lanes are also closed on the highway and southbound traffic can only pass the incident in one lane.
Northbound motorists in light vehicles can use The Bucketts Way as an alternative route, while heavy vehicles are being parked on site.
Motorists are advised to avoid the area or allow plenty of additional travel time.
Emergency services and traffic crews are attending.
For the latest traffic information, visit www.livetraffic.com or call 132 701.
More to come