UPDATE, 9am: A B Double truck has had it's trailers completely destroyed by fire on the Pacific Highway at Halfway Creek between Grafton and Coffs Harbour this morning at about 1am.
It is believed a wheel bearing seized, resulting sparks erupting into flames.
It has been reported a following truck driver noticed the sparks and smoke and radioed the driver of the truck to pull over.
The trailer was engulfed in flames only moments after the driver unhatched the cabin and got out of harms way.
The sparking caused a small area of bush to become alight as well.
A local resident who happens to also be the Halfway Creek RFS Captain said he was woken to the sounds of tyres exploding and seeing flames leaping into the sky.
The driver escaped injury however his load and trailers were totally lost.
UPDATE 7.30am: WE'VE received reports the fire is almost extinguished.
Two lanes remain open heading north and one southbound lane remains open.
Motorists are still advised to take caution.
6am: A TRUCK is on fire on the Pacific Hwy at Halfway Creek.
Motorists are advised to take precautions if heading in that direction.
It is unsure at this stage how many lanes are closed.
More details as they come to hand.