UPDATE: The crash has now been cleared, however traffic may still be heavy on approach.
Drivers are encouraged to exercise caution when driving through the area.
EARLIER: A TRUCK crash on the Kwinana Freeway has cause traffic chaos this morning.
The truck appears to have jackknifed, blocking lanes.
Police are on the scene directing traffic on the northbound stretch after South Street.
— Main Roads WA (@Perth_Traffic) June 18, 2018
Traffic is heavy on approach.