Pinjarra-Williams Road was closed on Thursday, after a truck rolled over and left woodchip debris across both lanes.
The truck rolled on Thursday morning, on Pinjarra Williams Road in Meelon.
The first part of the clean-up – flipping the trailer wheels – was completed by road crews five hours later, with the trailer’s bucket and woodchips still needing to be removed.
Police warned motorists to avoid the area due to road closure and traffic delays.