Dramatic photos show the extent of a artic lorry fire carrying lead batteries that closed the Newtown Bypass causing delays in the town on Tuesday afternoon.
The driver was able to escape the vehicle before emergency services arrived.
Crews from Newtown, Welshpool and Montgomery were sent to help at around 1.30pm, including an Environmental Protection Unit to prevent contamination in the area.
The fire service found the trailer on fire in a layby near the Dolfor roundabout.
A Dyfed-Powys Police spokeswoman said: "Police were called just after 1.45pm, Tuesday 15th, to a report of a lorry on fire on the A483 near Newtown.
"The road was closed while emergency services dealt with the fire."
Motorists were told to avoid the area while emergency services were dealing with the incident.
The A483 Newtown Bypass has since reopened.
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