Two westbound lanes on Five Islands Road approaching Springhill Road is closed after the fire broke out earlier on Thursday morning.

Reports of a large amount of building material ablaze was reported to authorities at 5.25am, a Fire & Rescue NSW spokeswoman said.​

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Crews started bringing the fire under control just before 7am, however the fire is still burning and 15 fire crews remain at the scene.

Police and Ambulance NSW as well as the traffic authority are also attending the incident.

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