A truck has rolled onto its side, blocking multiple lanes of traffic on a major Victorian road.
The traffic incident unfolded at 4am on Tuesday, however delays are expected through the morning as peak hour commuters and school holiday tourists head south towards the city.
The Hume Freeway is closed in the southbound direction at the Watson Street exit.
Drivers are being urged to exit at Watson Street and rejoin the freeway via the Northern Highway.
Victoria Police are on the scene and are working to clear the incident as soon as it is safe to do so.
More to come.