Several State and Federal MPs joined Transport Minister Dean Nalder in Clarkson as he announced an early start to construction of the road from Burns Beach Road to Hester Avenue.
Due to finish by mid-2017, Leighton Contractors will design and build the 6km extension, extend Neerabup Road to Wanneroo Road and widen the eastern portion of Hester Avenue.
Deputy Prime Minister and Infrastructure and Regional Development Minister Warren Truss said the Federal Government would provide $209.1 million for the $261.4 million project.
�It will allow for continued commercial and residential growth in Perth�s northern suburbs and support the state�s economy more broadly, including the creation of more than 100 jobs,� he said.
Mr Nalder said the focus was on giving people a choice of travel and investing in roads was essential for economic growth.
�Residents will see a significantly different road through the extensive upgrades, with the new section to provide a more direct route to Perth�s northern suburbs and relieve traffic build-up on nearby roads,� he said.
The State Government will fund the remaining $52.3 million for the project.
Moore MHR Ian Goodenough said the Mitchell Freeway was important for WA�s economy.
�The Mitchell Freeway links directly to major traffic routes such as the Leach Highway, Kwinana Freeway and indirectly to major interstate roads such as the Great Eastern Highway,� he said.
�Upgrading this road will support the efficient movement of goods and people across the city.�
Ocean Reef MLA Albert Jacob said it would make a difference in Kinross and Clarkson where �neighbourhood streets are currently gridlocked by commuter traffic in the mornings and in the evenings�.