The Federal Government has announced $9.2 million to go towards the development phase of the project on the Bruce Highway.
Three contracts, valued at more than $60 million, have been awarded on the South Australian project.
The State Government has announced the three contractors shortlisted for the major infrastructure project, which aims to improve one of Perth’s busiest road corridors.
The funding from the Australian and Federal Governments is aimed at improving safety on the popular tourist route, which has seen 213 recorded crashed in the five years to 2016.
Roads and Maritime Services is seeking tenders from shortlisted construction companies to upgrade the motorway at the Weakleys Drive and John Renshaw Drive intersection at Beresfield in NSW.