The Kwinana freight railway lines are a network of railways predominantly servicing the heavy industrial areas at Kwinana Beach south of Perth and to provide for the transport of freight servicing Fremantle Harbour, Kewdale Intermodal Facility and other freight destinations Perth. While some lines were constructed in the 1900s, most of the network was constructed in the 1950s and 1960s. Brookfield Rail owns the majority of the network, with the exception of privately-owned spur lines.