The McGowan Government will contribute $23 million towards upgrading the last remaining single-lane section of Marmion Avenue to Yanchep.
Funding for the road duplication between Camborne Parkway in Butler to Yanchep Beach Road in Yanchep was one of their pre-election commitments to ease congestion and create jobs.
The $23 million will be provided to the City of Wanneroo, which will carry out the road upgrade subject to council approving acceptance of the funding.
Design and planning works are set to be undertaken this year, with construction set to start in 2018 and completion in 2020.
The four-lane upgrade of Marmion Avenue is part of several projects aimed at catering for the population growth in the northern suburbs.
Transport Minister Rita Saffioti said that Yanchep was one of the fastest growing regions in Perth and the upgrade helps cater for that.
"We recognise the area is one of the fastest growing regions in Perth, and that is why we are committed to getting the access right with both road and rail.
"A McGowan Labor Government is committed to reducing congestion in our northern suburbs. We have committed to rolling out a series of measures, including the extension of the rail line to Yanchep as part of METRONET."
The State Government is planning for the METRONET rail extension to Yanchep, investing $146 million for major upgrades to Wanneroo Road and recently opened the Mitchell Freeway extension to Hester Avenue.
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