Construction has begin on the $118 million High Street and Stirling Highway intersection upgrade.
Motorists in Perth's southern suburbs will benefit from the $145 million Armadale Road dual carriageway project over Christmas.
Tasmanian Infrastructure Minister Michael Ferguson has announced the appointment of Stephen Cantwell as TasRail Chair.
Western Australian Premier Mark McGowan and Transport Minister Rita Saffioti have turned the sod on stage three of the $81.5 million Karratha-Tom Price Road project.
A Western Australian company has been awarded a $5.8 million contract to complete Jetty Road causeway upgrades at Casuarina Boat Harbour.