The improvements will reduce weaving and assist with the large amount of merging at the entry ramps that causes peak-hour congestion.
Drivers travelling from the airport towards the city who want to take the M80 Ring Road will need to use the Mickleham Road exit.
Meanwhile, drivers on Mickleham Road can keep left after the entry ramp for direct access to the M80 Ring Road, or keep right to head into the city via the Tullamarine Freeway.
All routes are signed with markings on the road to get you to your destination. Watch the video to see what it's like to use the new exits and lanes near Mickleham Road.
The new exits are now open, with some weather-dependent works continuing.