Emergency services were called to the southbound lanes of the dual carriageway around 2.30am, responding to reports of a truck rollover.

When they arrived, they found a B-double had tipped and come to rest on its side just past Keajura Road, around 20 kilometres south of Tarcutta.

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The driver of the truck, a man believed to be aged in his 50s, sustained cuts to his face and in shock, a spokesperson for NSW Ambulance confirmed.

He was taken to Wagga Base Hospital in a stable condition.

One of the southbound lanes of the highway remains closed and motorists will need to allow extra time for their journey and exercise caution.