Firefighters are battling a blaze involving a lorry near Trowbridge.
Fire crews from Trowbridge, Bradford on Avon and Melksham are attending the incident in Keevil following a call at around 1.15pm this afternoon.
The incident appears to be on a yard just off Main Street, between Keevil and crossroads at Great Hinton.
Firefighters are using breathing apparatus, hose reel jets and main jets to tackle the raging fire, which had spread to a baler and shed.
The road remains open in both directions and there are no delays in the area.