The Great Western Highway has been closed in both directions with a single-vehicle truck fire at Little Hartley.
A truck and dog trailer caught fire around 4.15pm near Coxs River road on Thursday, July 11.
Fire Rescue NSW and Rural Fire Service are on scene attending to the truck which also caused a paddock fire.
No persons were injured however there are heavy delays with traffic affected in both directions.
Diversions are in place at Darling Causeway and Chifley Road with a stop/slow in place.
Drivers are urged to allow for extra travel time and to exercise caution.
At this stage it is unclear how the fire was ignited.