South Western Highway in Mullalyup

South Western Highway in Shire Of Donnybrook-Balingup is an asphalted expressway (70 km/h). It runs in a southeast-northwest direction and crosses Clifford Road, Crowley Place, Bridge Street, Marshall Road, Billinghurst Road, Argyle Road, Bendall Road, Munda Biddi Trail, Marginata Drive, Irishtown Road, Golf Club Road and Dawson Place. It ends in a cul-de-sac and connects Balingup, Donnybrook, Mullalyup, Kirup, Brookhampton and Newlands. This road is part of the long-distance road "1".