One last section runs through western suburban Melbourne, from the interchange with West Gate Freeway and Western Ring Road in Laverton North to Flemington, signposted as both Princes Highway and Geelong Road, but this is still officially gazetted as Princes Highway (West), and the former alignment through central Melbourne was eventually re-declared as their own separate constituent parts.

Following in December 1964 was a westerly extension of the super-2 highway from Hernes Oak to Gunns Gully (Newborough) and the Moe Bypass completed the new route - opening in early 1967.

The original submissions in January 1920 were in order for the Prince to have the opportunity during his visit to make the trip from Melbourne to Sydney overland along the route.

[2] Approval was later given by the Victorian executive in January 1922 to extend the highway west from Melbourne through Geelong, Camperdown, Warrnambool and Portland to the South Australian border.

through Waurn Ponds: Waurn Ponds – Corio: Cocoroc – Hoppers Crossing: Brooklyn – North Melbourne: North Melbourne – Parkville: Parkville – Hallam: Hallam – Narre Warren: Berwick – Beaconsfield: Beaconsfield – Nar Nar Goon: Drouin – Nilma: Moe – Newborough: Morwell – East Morwell: This section is entirely contained within the City of Wyndham local government area.