Shortly after 11am Friday, September 13, police were called to reports of a collision between a truck and a ute towing a caravan.

The crash occurred on the Monaro Highway at Chakola, near the Numeralla River rest area just north of Cooma.

The caravan was destroyed, and both the ute and truck sustained extensive damage.

The male driver of the truck, a 27-year-old man, was trapped in his vehicle before being airlifted to Canberra Hospital in a critical condition, police reporting suspected fractures to his legs and pelvis.

Police said no-one else is believed to have sustained any injuries as a result of the crash.

The driver of the vehicle towing the caravan was taken to Cooma Hospital for mandatory blood and alcohol testing.

The incident caused heavy delays to traffic in the area, with northbound lanes blocked for several hours.

Investigations into the collision continue. Police are urging anyone who witnessed this incident, or who may have dashcam footage, to come forward.

Anyone with information about this incident is urged to contact Crime Stoppers 1800 333 000 or https://nsw.crimestoppers.com.au.