Department of State GrowthRoads for our Future

Midland Highway 10 Year Action Plan

Perth-Breadalbane Duplication

Perth to Breadalbane Duplication

The works

These works will provide a four-lane highway from Perth to link in with the existing four-lane Southern Outlet north of the Breadalbane roundabout, and a new underpass arrangement to provide safe access to the highway. There will also be an upgraded interchange including an underpass for airport traffic and provision for cyclists.

Current situation

Work is on schedule, with the concrete deck for the Breadalbane junction bridge poured on 20 June 2017. The new bridge allows the highway to pass over the top of the new highway off-ramp which will connect to the existing Breadalbane roundabout.

Current status

Under construction

Start of works

December 2015

Completion of works


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More information

If you would like further information, please contact the Department of State Growth at