The Princes Highway at Berry northbound now has a traffic jams of as many as 7km as holidaymakers head home.
Advice from the Transport Management Centre said there is also a 3km traffic backlog at Nowra.
The large 10km queue at Ulladulla appears to have cleared to just a 2km queue.
Southbound on the Pacific Highway there is a huge 12km backlog of cars at Macksville, a 1km queue at Woolgoogla and a 2km line-up at Kempsey.
Motorists are advised to expect significant delays throughout the afternoon and should allow additional travel time.