A log truck rolled over on the Snowy Mountains Highway near Kiandra on Friday morning leaving the driver with serious lacerations to his head and legs.
The 51-year-old Cooma truck driver rolled his unladen B-double log truck about 4km from Kiandra at 6.30am.
There was ice and slushy snow on the road at the time of the single vehicle accident.
The driver was helped by passersby who drove him towards Adaminaby where he was met by Cooma police and Road and Maritime Services (RMS).
Cooma paramedics met the RMS vehicle with the injured man and transported him by ambulance to the Adaminaby airport where he was airlifted to the Canberra Hospital by Snowy Hydro SouthCare Rescue helicopter.
Monaro Local Area Command Cooma Inspector Peter Rooney who attended the accident said police had not yet spoken to the injured driver and were yet to determine the cause of the accident.
"The weather was bad and police diverted traffic for several hours around the overturned vehicle [which was on the road]," Inspector Rooney said.
He said it was snowing during the traffic diversion and described the weather was atrocious.
"A heavy vehicle tow truck came from Wagga to tow the truck away."
The Adaminaby Rural Fire Service brigade attended the accident along with Cooma and Jindabyne NSW Fire and Rescue which provided HAZMAT for fuel leaking from the overturned vehicle into the waterway.