Police are urging two motorists who might have seen a serious crash at Hexham last month to come forward.
A Mack truck and a motorcycle crashed soon after 10am on Friday, August 2, on Maitland Road.
The 21-year-old male motorcycle rider from Woodberry was flown to hospital with serious leg injuries but has since been released from hospital.
The 54-year old male truck driver from Torryburn was uninjured and taken to hospital for mandatory testing.
Police are asking the two motorists, one in a car and another in a truck, stopped at traffic lights on Maitland Road before the collision to come forward.
The Hexham Bridge was closed for three hours and one eastbound lane of the Pacific Highway for five hours while the scene was being examined.
Anyone with information or dash-cam vision is urged to come forward.