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| Highways in Western Australia | |
|---|---|
| Name | Highways in Western Australia |
| Country | Australia |
| State | Western Australia |
| Length km | 23000 (approx.) |
| Maintained by | Main Roads Western Australia |
| Major routes | Great Northern Highway; Eyre Highway; Great Eastern Highway; Brand Highway; Albany Highway |
Highways in Western Australia
Highways in Western Australia are the primary long‑distance road corridors linking Perth, Broome, Kalgoorlie, Albany, Esperance, Geraldton, Karratha, Port Hedland, Narrogin and Wheatbelt towns across the state. These corridors support freight flows for Rio Tinto, BHP, Fortescue Metals Group, CBH Group grain transport, and tourism to destinations such as Ningaloo Reef, Karijini National Park, Shark Bay, Rottnest Island (by ferry), and Monkey Mia.
Western Australia’s highway network spans arid interior routes like the Great Northern Highway and coastal corridors such as the Indian Ocean Drive and South Western Highway, connecting mining regions of the Pilbara and Goldfields–Esperance to ports at Fremantle, Port Hedland, Dampier, and Bunbury. Key stakeholders include Main Roads Western Australia, the Western Australian Planning Commission, and local governments of the City of Perth, Shire of Broome, Shire of Ashburton, and Shire of East Pilbara. Highways intersect with national corridors including the National Highway (Australia) network that links to National Highway 1 around the continent.
Early routes followed Indigenous trade tracks later documented by explorers such as John Forrest, Alexander Forrest, Edward John Eyre, and Francis Thomas Gregory during expeditions that opened the Goldfields and pastoral regions. The expansion of sealed highways accelerated during the 20th century with investments tied to projects like the Gold Rushes (Western Australia), the development of the Trans-Australian Railway, and wartime infrastructure programs influenced by events such as the Second World War. Post-war growth and resources booms led to upgrades supporting companies like WorleyParsons and contractors such as Leighton Holdings (now CPB Contractors). Heritage routes reflect influences from engineers including C. Y. O'Connor (notably water and port infrastructure) and planners linked to the Metropolitan Region Planning Authority.
Route numbering follows Australian alphanumeric standards applied across states, including route markers for National Highway 1, National Route 94 (Eyre Highway), and other corridors designated as State Route numbers. Main Roads Western Australia classifies roads as State Road, arterial routes, and local distributor routes used by freight operators like Toll Group and Pacific National. Classification affects eligibility for funding from national bodies such as the Australian Government's infrastructure programs and influences maintenance agreements with port authorities including the Pilbara Ports Authority and Southern Ports Authority.
Prominent corridors include the Great Eastern Highway linking Perth to Kalgoorlie and the Eyre Highway across the Nullarbor to South Australia via Norseman. The Great Northern Highway serves the Kimberley and Pilbara to Wyndham, while the Brand Highway connects Perth and Geraldton. Other important routes are Albany Highway to Albany, South Western Highway to Bunbury, Mitchell Freeway and Kwinana Freeway within the Perth urban network, and the Tanami Road/Gunbarrel Highway corridors for remote access. Regional connectors include Indian Ocean Drive, Goldfields Highway, Norseman–Esperance Highway, and North West Coastal Highway providing links to strategic sites such as Woodside Petroleum installations, LNG facilities at Karratha, and mining sites near Ravensthorpe.
Day‑to‑day asset management is led by Main Roads Western Australia with contracts awarded to firms including BMD Group, Decmil Group, and Macmahon Holdings for construction, resurfacing, and upgrades. Maintenance regimes coordinate with utilities such as Horizon Power in regional areas, rail operators like Aurizon, and port authorities. Emergency responses involve agencies including the Western Australia Police Force, St John Ambulance Western Australia, the Department of Fire and Emergency Services (Western Australia), and the Bureau of Meteorology for weather‑related closures.
Traffic volumes vary from high urban flows on corridors like Mitchell Freeway to light remote traffic on the Canning Stock Route. Heavy vehicle movements reflect iron ore, lithium, and grain exports by companies such as Fortescue Metals Group and Mineral Resources Limited, raising concerns addressed by industry groups like the Chamber of Minerals and Energy of Western Australia and safety programs from Road Safety Commission (Western Australia). Crash reduction measures include overtaking lanes, rest area programs near Nullarbor Plain and driver fatigue initiatives coordinated with the Royal Automobile Club of Western Australia (RAC). Tourism season peaks affect coastal routes serving Margaret River, Rottnest Island access points, and national parks managed by the Department of Biodiversity, Conservation and Attractions.
Planned works include progressive widening and duplication projects on corridors such as the Great Eastern Highway, safety upgrades on the North West Coastal Highway, and freight route enhancements supporting developments by Woodside, Shell Australia, and new lithium projects near Greenbushes. Funding partnerships involve the Infrastructure Australia agenda, federal/state agreements, and private sector contributions from miners like South32. Resilience projects focus on climate adaptation for low‑lying approaches near Fremantle and drainage upgrades coordinated with the Water Corporation (Western Australia).
Category:Roads in Western Australia