South Western Highway

South Western Highway

Western Australia
South Western Highway; Western Australia
	View north of Harvey
General information
Type	Highway
Length	406 km (252 mi)
Route number(s)	National Route 1 (Bunbury – Walpole); State Route 20 (Armadale – Bunbury); State Route 22 (Mundijong);
Major junctions
Northwest end	Albany Highway (State Route 30), Armadale, Perth
	Thomas Road (State Route 21); Pinjarra Road; Coalfields Highway (State Route 107); Wilman Wadandi Highway (State Route 101); Robertson Drive (National Route 1 / State Route 10); Brockman Highway; Muir Highway (State Route 102); Vasse Highway;
Southeast end	South Coast Highway (National Route 1), Walpole
Location(s)
Major settlements	Serpentine, North Dandalup, Pinjarra, Waroona, Yarloop, Harvey, Brunswick Junction, Bunbury, Donnybrook, Bridgetown, Manjimup
Highway system
	Highways in Australia; National Highway • Freeways in Australia; Highways in Western Australia;

South Western Highway is a highway in the South West region of Western Australia connecting Perth's southeast with Walpole. It is a part of the Highway 1 network for most of its length. It is about 406 kilometres (252 mi) long.