The Mitchell Freeway is a freeway in the northern suburbs of Perth, Western Australia, linking central Perth with the city of Joondalup. It is the northern section of State Route 2, which continues south as Kwinana Freeway and Forrest Highway. Along its length are interchanges with several major roads, including the Graham Farmer Freeway and Reid Highway. The southern terminus of the Mitchell Freeway is at the Narrows Bridge, which crosses the Swan River, and the northern terminus is at Romeo Road in Alkimos, a suburb within the City of Wanneroo.
Planning for the route began in the 1950s, and the first segment in central Perth was constructed between 1967 and 1973. Named after Sir James Mitchell, the freeway has been progressively extended north since then. In the 1970s, the first two extensions were completed, up to Hutton Street in Osborne Park. By the end of the 1980s, the freeway had reached Ocean Reef Road in Edgewater. The Joondalup railway line was constructed in the freeway median in the early 1990s. This necessitated the relocation of a section of the southbound carriageway, and the construction of three new bridges. In conjunction with these works, additional lanes were constructed in the realigned section.
Since the 1990s, extensions to the Mitchell Freeway have taken it to Romeo Road in Alkimos, which is the freeway's terminus as of July 2023. Further works are planned, which will eventually take the freeway past Yanchep and Two Rocks to the boundary of the Perth Metropolitan Region.
Route description
The Mitchell Freeway is the northern section of State Route 2. It commences at the northern end of the Narrows Bridge, Perth, continuing from Kwinana Freeway, and terminates north of the satellite city of Joondalup at Romeo Road, Alkimos. All intersections with the freeway are via grade separated interchanges. The speed limit is except in central Perth, where the limit is reduced to as the freeway interchanges with the Graham Farmer Freeway and Mounts Bay Road. South of Hepburn Avenue, the freeway has 3 to 5 lanes in each direction. From that point north, there are mostly two lanes in each direction, expanding to three lanes between Hodges Drive and Shenton Avenue. For almost the entirety of its length the median strip of the freeway also houses the Joondalup railway line, with all but two of the line's current stations and a railway depot also built on the strip. Additionally, a shared pedestrian and bicycle path is built alongside most of the freeway.
Perth and West Perth
The section near the Perth city centre, within the City of Perth local government area (LGA), features many partial access interchanges. The Narrows Interchange is located just north of the Narrows Bridge, on the eastern edge of Kings Park. This is a hybrid interchange connecting the freeway with Mounts Bay Road and Riverside Drive, over a distance of . There is complete access to and from Mounts Bay Road via a standard northbound exit ramp and looped ramps for the other movements. There is a partial Y-Interchange incorporated for direct access to and from Riverside Drive via a southbound exit ramp and a northbound entrance ramp. All other traffic movements must be made via Mounts Bay Road. The Riverside Drive entrance ramp merges with the Mounts Bay Road northbound entrance ramp. The southbound exit ramp is similarly shared, before diverging for three destinations: Mounts Bay Road, Riverside Drive, and the Perth Convention and Exhibition Centre car park. The main northbound exit to Hay Street is via an access road, which begins on the Mounts Bay Road exit ramp. The access road rejoins the freeway as an outside lane on the shared Riverside Drive and Mounts Bay Road entrance ramp. The Hay Street exit ramp, a short distance later, can be accessed from the two outermost lanes. This allows the traffic entering the freeway from the ramp to continue north or exit at Hay Street without weaving.