Highway 1 (Western Australia)

Highway 1 Western Australia
Map of Western Australia with Highway 1 highlighted in red
Type	Highway
Length	5,305 km (3,296 mi)
Opened	1955
Route number(s)	National Highway 1 (east of Norseman and Port Hedland) National Route 1 (Norseman to Port Hedland)
Southeast end	WA/SA border near Eucla
	Coolgardie-Esperance Highway (National Highway 94) Newdegate-Ravensthorpe Road (State Route 40) Albany Highway (State Route 30) South Western Highway (State Route 20) Forrest Highway (State Route 2) Great Northern Highway (National Highway 95) Indian Ocean Drive (State Route 60) Midlands Road (State Route 116) Geraldton-Mount Magnet Road (State Route 123) Marble Bar Road (State Route 138)
Northeast end	WA/NT border near Kununurra
Major settlements	Norseman, Esperance, Albany, Bunbury, Perth, Geraldton, Carnarvon, Port Hedland, Broome
Highways in Australia National Highway • Freeways in Australia Highways in Western Australia

In Western Australia, Highway 1 is a 5,305-kilometre (3,296 mi) long route around the state, from the South Australian border near Eucla to the Northern Territory border near Kununurra. Highway 1 continues around the rest of Australia, joining all mainland state capitals, and connecting major centres in Tasmania. All roads within the Highway 1 system are allocated a road route numbered 1, M1, A1, or B1, depending on the state route numbering system. In Western Australia, most of the highway is designated as National Route 1; however, the sections in the north-east and south-east of the state that are concurrent with the National Highway routes linking Perth to Adelaide and Darwin are designated as National Highway 1.

The Western Australian section of Highway 1 starts at the South Australian border, east of Eucla. It follows the Eyre Highway west to Norseman, designated National Highway 1. At Norseman, Highway 1 continues south along Coolgardie-Esperance Highway as National Route 1, while the National Highway follows Coolgardie-Esperance Highway north, as National Highway 94. After reaching Esperance, Highway 1 follows South Coast Highway to Ravensthorpe and Albany, and then follows the coast to Walpole. The highway departs Walpole as South Western Highway, travelling north-west to Bunbury via Manjimup, Bridgetown, and Donnybrook. The highway follows Robertson Drive, Bunbury's ring road, and then heads north via Forrest Highway. At Lake Clifton, Old Coast Road takes Highway 1 north along the coastline to Halls Head, south of Mandurah. From Halls Head, the highway bypasses Mandurah via Mandurah Road, and continues north along that road to Karnup, at the edge of the Perth Metropolitan Region.

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