All Melbourne-bound lanes of the Hume Fwy are closed at Violet Town, due to a truck fire at Longwood.
Motorists should take Murchison-Violet Town Road and the Goulburn Valley Freeway to re-join the Hume Fwy at Seymour.
The closure is likely to remain in place until this afternoon.
North-bound lanes are open.
The scene is under the control of emergency services, and lanes will open as soon as it is safe to do so.
Real-time traffic conditions are available at traffic.transport.vic.gov.au