Bussell Highway is a generally north–south highway in the South West region of Western Australia. The highway links the city of Bunbury with the town of Augusta and is approximately 140 kilometres (87 mi) in length. The highway is signed State Route 10, except in Busselton where the construction of the in 2000 resulted in this stretch being changed to Alternate State Route 10 with the Bypass signed State Route 10.