Update: A truck driver has died at the scene of a crash on Tuesday on the Hume Highway at Gunning, about 50km west of Goulburn.
Emergency services were called to the highway about 4.40pm after reports of a truck crash.
Officers from The Hume Police District attended and were told a northbound prime mover crashed into a B-double, which was broken down in lane one.
The impact caused the prime mover to catch alight. The driver died at the scene and has not been formally identified.
Officers from the Hume district have established a crime scene and commenced an investigation into the incident.
The driver of the broken-down truck was not injured and is speaking with police.
Investigators are appealing for anyone who witnessed the crash to contact police.
All northbound lanes were closed and re-opened at about 7am today.
Earlier at 7.30pm on April 23: South bound traffic has now re-opened and is moving slowly.
North bound lanes remains closed, with no word on when they may be re-opened.
Earlier: A truck has caught fire on the Hume Highway near Gunning, closing both lanes of traffic in either direction.
Fire crews attached to the Goulburn and Yass stations have been in attendance since the fire broke out an hour ago.
The cause of the fire is not yet known, but it may have been a result of a crash involving another vehicle.
A spokesperson for Goulburn 305 Fire Station said it is expected to take at least another half-hour before it can be contained.
Once the fire has been subdued, the highway will be re-opened to the public.