Traffic has been disrupted during peak-hour following the crash near the Kwinana freeway.
Both lanes of North Lake Road, from Elderberry Drive to Berrigan Drive, have been closed in South Lake following a crash.
Access is also reduced at Osprey Drive.
Emergency and towing services are on site but traffic heavy on approach.
Main Roads advises motorists to take caution on the roads.
Mandurah Crab Fest boasts huge range of free, family friendly entertainment
Fuel prices surge in Perth, Mandurah
Teen boys charged over Mandurah burglaries
Tragic update in search for missing man Robert Snyder
Premier Roger Cook to leave Kwinana electorate, move to Perth
Mandurah Marine Rescue's new vessel named in memory of nun who survived 1959 boating accident
Teen dies in motorbike crash at Waroona Dam
Shark alert issued after whale carcass reported at Preston Beach
Kwinana businesses to refuse serving students during school hours