A crash on Tonkin Highway southbound after Reid Highway, Morley has been cleared but traffic remains heavy.
The right and emergency lanes have been reopened but traffic is still backed up and moving slowly.
There has also been a crash on Roe Highway westbound at Willeri Drive, Canningvale.
The left emergency lane is blocked and towing services are working to clear the road.
Traffic is slow and motorists have been urged to approach with caution.