The incident occurred about 3.20am, one kilometre south of Parkville.

Following the crash a man in his 40s was trapped inside a vehicle and emergency services worked to free him. 

He was treated at the scene then taken by ambulance to Scone Airport where the Westpac Rescue Helicopter met paramedics on the tarmac.

He was flown to John Hunter Hospital with suspected spinal and pelvic injuries. 

The highway is expected to be closed for several hours to allow a recovery of the two vehicles, along with a complex clean up operation.

Diversions are available for light vehicles only.

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Northbound: Diverting from Scone motorists should use Liverpool Street, Middlebrook Road, Cressfield Road to then rejoin the New England Highway.

Southbound: motorists are being diverted via Cressfield Road, Middlebrook Road, Liverpool Street to then rejoin the New England Highway at Scone.

Heavy vehicles are are being parked. This is information was correct as of 8am Wednesday.

Motorists travelling via this location should exercise caution, follow the direction of traffic controllers and allow additional travel time.

For further information regarding this incident and others on the NSW Road Network visit www.livetraffic.com before travel.

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