Firefighters are tackling a tractor blaze on the B4005.
Royal Wootton Bassett and Cricklade Police say that Salthrope Hill is closed while Dorset & Wiltshire Fire and Rescue Service crews put out the serious vehicle fire.
The incident is thought to have started at around 6.20pm today, 9 September.
“The road will be closed for some time so please avoid the area”, police say.
Two fire crews and a water carrier are at the scene alongside Wiltshire Police.