Both lanes are blocked northbound at Berrigan Drive near South Lake.
Main Roads have reported a crash blocking both lanes heading north at Berrigan Drive near South Lake.
A detour lane has been set up in the left emergency lane.
Towing and emergency services are on site.
The Incident Response Service is en route, traffic is slow on approach, drive with caution.
Traffic is backed up to Rowley Road.
#KwinanaFwy northbound to #BerriganDr, South Lake - BOTH LANES BLOCKED, TRAFFIC SLOW ON APPROACH - crash #perthtraffic
— Main Roads WA (@Perth_Traffic) January 22, 2018
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