From the late-1980s to the mid-1990s, Whitfords Avenue east of Marmion Avenue was progressively duplicated; first to Mitchell Freeway, and then to Wanneroo Road, and then the section west of Marmion Avenue within the vicinity of Westfield Whitford City.
From the late 1980s to the mid 1990s, Whitfords Avenue was expanded in stages. Initially, it was extended to Mitchell Freeway, followed by an extension to Wanneroo Road, and subsequently, a section west of Marmion Avenue within the Westfield Whitford City shopping center.