The $75 million final stage of the Roe Highway project has been completed, linking South Street to the Kwinana Freeway.
Stage Seven of the Roe Highway completes the final stage of the project, linking the Great Northern, Great Eastern, Reid and Tonkin Highways with the Kwinana Freeway.
"The completion of this $75million project provides seamless travel between Midland and the Kwinana Freeway," Ms MacTiernan said.
"Traffic modelling shows that once Stage Seven is opened to traffic, the number of vehicles travelling on South Street near Leeming and the Freeway will decrease by approximately 12,000 to 14,000 vehicles per day.
"Construction of Stage Seven of Roe Highway has taken a little over a year to complete and was carried out by an alliance contract consisting of Clough Ltd, Maunsell Australia and Main Roads.
The Minister said community consultation was one of the key elements of the project, with the establishment of a Community Representative Group (CRG) and an Environmental Reference Group (ERG).
As this final stage of Roe Highway forms part of the State Government's six-point plan, its opening also addresses the issue of freight movements through Fremantle and surrounding areas as outlined under the Freight Network Review, Local Impacts Committee and Leach Highway Improvement Plan recommendations.
The state government funded the 4.5 kilometer final stage to the tune of $51 million, while $24 million was provided by the Federal Government.