from the anzac highway, south road continues north as a western bypass of the city across many arterials, the major ones being sir donald bradman drive, port road, torrens road, regency road and grand junction road, to the junction with the port river expressway and the salisbury highway. until the port river expressway opened in 2005, the sections of south road and salisbury highway between grand junction road and port wakefield road were known as the south road extension, built in the early 1990s.