1957 1957: Standard gauge Marree railway line replaced the narrow gauge line on a route west of the Flinders Ranges 1969: Willunga railway line closed from Hallett Cove 1970: Port Pirie to Broken Hill standard gauge line officially opened, completing the Sydney – Perth rail link, and creating triple-gauge stations at Gladstone and Peterborough (once Terowie–Peterborough was converted from narrow to broad gauge) 1971: Moorook railway line closed 1970s: Southeastern lines closed or abandoned 1972: Whyalla railway line opened from Port Augusta (standard gauge) 1978: Noarlunga Centre railway line extended from Hallett Cove 1980: Tarcoola to Alice Springs standard gauge railway opened, first stage of the Tarcoola-Darwin line 1982: Adelaide to Crystal Brook standard gauge railway opened to replace broad gauge from Salisbury to Port Pirie, connecting Adelaide to the standard gauge network 1987: Kingston–Naracoorte closed 1990: Waikerie and Peebinga lines closed 1995: Adelaide to Melbourne gauge converted from broad gauge to standard gauge under the Federal Government's One Nation project (isolated broad gauge southeastern lines stopped being used) 1998 Pinnaroo and Loxton lines converted to standard gauge to reconnect at Tailem Bend 2008: State Government announces budget which includes plans to electrify the Noarlunga, Outer Harbor and Gawler lines 2014: Noarlunga Centre line extended to Seaford and electric trains commence service along the Seaford and Tonsley lines 2015: Pinnaroo and Loxton lines mothballed 2019: Eyre Peninsula Railway line closed The first South Australian steam-operated line was built as a broad gauge () line in 1856 between the city and Port Adelaide stopping at Bowden, Woodville and Alberton. This line is now part of the Adelaide suburban network and has been proposed for standardisation and conversion to light rail. It was extended as the Outer Harbor line to Outer Harbor in 1908. A branch was built to Grange in 1882. It was extended as the Henley Beach line to Henley Beach in 1894 and closed in 1957. Development of the lines Southern Lines The South Line, through the Adelaide Hills, was opened to Aldgate, Nairne in 1883, Murray Bridge in 1884 and Bordertown and Serviceton, Victoria, connecting with Victorian Railways in 1887. This line was standardised in 1995. A branch line was built to Marino in 1913, and extended to Willunga in 1915. The section from Hallett Cove to Willunga was closed in 1969. In the 1970s the line was extended south from Hallett Cove, becoming what is now the