The Kwinana Freeway northbound has reopened following a truck fire in Baldivis.
The fire started around 11.45am on Wednesday near the Mundijong Road exit ramp forcing the closure of the freeway for about an hour.
It has since reopened but the left lane remains closed along with the Mundijong Road exit ramp.
Main Roads WA says the fire has now been extinguished.
Traffic is heavy back to Safety Bay Road.
Emergency services are on site.
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