It also included upgrading the bridge over the railway line leading to Armadale and also improving pedestrian access via sidewalks. Currently, the overpass has been constructed and more minor modifications will continue into 2023. Antony Albanese then came to win the federal election in 2022, but construction already commenced in 2021. Major interchanges and exits As Leach Highway is not limited access, a large number of the roads that Leach Highway are connected to are not controlled. Major intersections are at-grade and controlled. Exceptions are the Albany Highway, Orrong Road and Abernethy Road, which are grade separated in favour of Leach Highway. The first two are diamond interchanges, while the latter is a single-point urban interchange (SPUI). Although also grade-separated, the Centenary Avenue interchange is controlled by traffic lights on the westbound side of the highway. See also Highways in Australia Highways in Western Australia Freeways in Australia Freeways in Western Australia References Further reading Main Roads WA, Gateway WA Project Master Plan, Page 7 External links Main Roads Western Australia Highways and freeways in Perth, Western Australia Highway 1 (Australia)