In December 1906, the Jandakot-Armadale Railway Act 1906 was assented for an 11-mile (18 km) extension from Jandakot to Armadale to join the South Western Railway,[2] with the line opening on 15 July 1907.

[3] It was constructed in response to the need to transport agricultural goods in the Armadale and Forrestdale areas to the port of Fremantle.

[4] With the construction of a new Kwinana line from Jarrahdale to Kwinana, the Jandakot to Armadale section closed on 23 January 1964, followed by Bibra Lake to Jandakot on 6 June 1966.

[5][6] The Spearwood to Bibra Lake section was retained to serve CBH Group and Elders Limited sidings until it closed in 1991.

[3] In the 1980s, the railway corridor between Armadale and Forrestdale was redeveloped as a major arterial road, Armadale Road, joining onto Forrest Road which west of Forrestdale ran parallel to the railway.