A 45-year-old man has died following a single vehicle traffic crash near Marlborough overnight.
Initial information indicates around 7.30pm a semi trailer was travelling north on the Bruce Highway when, for unknown reasons, the vehicle overturned about 25 kilometres north of Marlborough.
The driver and sole occupant of the vehicle, a 45-year-old Plainland man, was pronounced deceased at the scene.
The Bruce Highway was closed for several hours while crews worked to clear the scene.
The Capricornia District Forensic Crash Unit is investigating the incident.