A lorry carrying a wind turbine blade has caught fire, forcing the closure of the A714 between Dumfries and Galloway and South Ayrshire.
Emergency services were called to the incident near Bargrennan at about 05:50.
Police Scotland said there were no reports of any injuries and diversions had been put in place.
The Scottish Fire and Rescue Service said the fire had been put out by about 08:25.
Two crews were sent to the scene and found the lorry "well alight".
They used water from the nearby river to help douse the flames.
"Firefighters in breathing apparatus quickly extinguished the blaze and thankfully the driver of the vehicle was not injured," said an SFRS statement.
"The cab of the HGV was completely destroyed by fire."