Bridgetown is a town in the South West region of Western Australia, approximately 270 kilometres (168 mi) south of Perth on the Blackwood River at the intersection of South Western Highway with Brockman Highway to Nannup and Augusta.

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.