The second, longer section is a 1.5-kilometre (0.93 mi) two-lane single carriageway in Mount Claremont used to link central Perth to West Coast Highway via Hay Street, Underwood Avenue and Rochdale Road.

[6][5]: 125  The 1962 preliminary edition of the Metropolitan Region Scheme, which was derived from the report, included a controlled-access highway[7] on a similar alignment, with the addition of what is now the Mitchell Freeway terminating at it while it continued north.

[9] In 1962, the Mount Claremont section from Rochdale Road (then West Coast Highway) to Underwood Avenue was completed to provide access to Perry Lakes Stadium and other facilities constructed for the 1962 British Empire and Commonwealth Games.

[10] In the early 1990s, as part of the Northern Suburbs Transit System project, Stirling railway station was constructed in the median strip of the Mitchell Freeway immediately south of Cedric Street, ultimately opening in 1993.

[12] In October 2011, the Metropolitan Region Scheme was amended to rezone the Stephenson Highway road reserve north of Jon Sanders Drive to the Mitchell Freeway to "City Centre".

[15] Currently underway as of January 2023 is the extension of Stephenson Avenue northwards from Scarborough Beach Road, to connect to Cedric Street and the Mitchell Freeway.

[19] Further disruption was caused by the collapse of Clough, which had been contracted to deliver the project in a joint venture with Acciona and WSP, though the government denied further delays were anticipated.