UPDATE: The crash was cleared after 7.50am.
Kwinana Freeway was experiencing delays northbound after a crash this morning.
Traffic was banked up from Mortimer Road to Mundijong Road and both emergency lanes were closed.
Drivers were asked to exercise “extreme caution”.
The full extent of lane closures was unknown, but Main Roads said there was heavy congestion in the area.
UPDATE: Kwinana Fwy northbound prior to Mortimer Rd, Wellard due to a CRASH, both sides of the emergency lanes blocked HEAVY CONGESTION IN THE AREA https://t.co/5aOCUPjE3x #perthtraffic pic.twitter.com/HohB4P5qIK
— Main Roads WA (@Perth_Traffic) May 27, 2019
The accident occurred after 6.30am.
This comes after trains experienced delays on four Perth lines this morning.