UPDATE: a crash on the Kwinana Freeway southbound has been cleared, although traffic remains heavy in the area. A crash on the Mitchell Freeway northbound has also been cleared.
The left lane on the Mitchell Freeway southbound is blocked after Powis St in Leederville – due to a third crash this afternoon.
5pm: Drivers heading home via the Kwinana Freeway tonight could experience delays.
The crash blocked the left emergency lane southbound after Anketell Road this afternoon.
Traffic is heavy back to Armadale Road.
Main Roads said emergency and towing services are on site with the Incident Response Service en route.
A crash is also slowing traffic on the Mitchell Freeway northbound prior to Hester Avenue in Clarkson.
The right emergency lane is blocked and traffic is slow on the approach.