the South Western Railway. The line also extended to Jarrahdale and one of the main purposes of the line was to transport bauxite between Jarrahdale and Alcoa's Naval Base refinery. The Kwinana–Mundijong line is one of the few narrow gauge lines in the network. Kwinana Intermodal Terminal In 2006 the government commenced an investigation for the development of an intermodal freight terminal in the Kwinana area, and in 2007 a preferred site was identified in the Latitude 32 industrial area at Hope Valley/Wattleup. Planning is progressing for the intermodal terminal. Mundijong freight rail relocation The Shire of Serpentine–Jarrahdale has adopted a structure plan for future urban in the Mundijong/Whitby district. The South Western Railway bisects the district, and one of the key components of the structure plan is the relocation of the freight rail along the western perimeter of the structure plan area. The relocation is intended to free up land for the construction of a new passenger rail terminus on the Armadale Line near the point where the Kwinana–Mundijong line joins the South Western Railway, servicing a proposed town centre at Whitby. The relocated rail will run through the proposed West Mundijong Industrial Area, on the western side of the future Tonkin Highway alignment. There is a possibility an intermodal freight facility will be located along the relocated freight railway Midland freight rail realignment The possibility of realigning the Midland freight rail line was first identified in the Midland Revitalisation Charette held in 1997, as a means to reduce the impact of ‘wheel squeal’ for residents in the Woodbridge area. An alignment linking to the existing Eastern Railway east of Midland and joining the Midland Junction-Kewdale line south of Woodbridge has been identified. References Rail freight transport in Australia Rail transport in Western Australia Railway lines in Perth, Western Australia Standard gauge railways in Australia 3 ft 6 in gauge railways in Australia