Expect a painful run through the northern suburbs.
An early morning truck crash on Sydney Road at Fawkner has left an enormous spill of diesel on the road and taken down traffic lights, closing the road in both directions for more than an hour.
"We've managed to get all citybound lanes at Sydney Road reopened to traffic," said Chris Miller from VicRoads. "Unforunately traffic heading away from the city remains blocked."
"We do expect the cleanup to continue for a little while with a diesel spill mixed with wet conditions it will take quite a lot of sand," he said.
Drivers are being urged to take Pascoe Vale Road, Edgars Road, High Street or the Hume Freeway instead.