$236 million Mitchell Freeway extension opens – on schedule and under budget

30 Aug 17

The $236 million Mitchell Freeway extension in Perth, Western Australia, is now open to the public – a milestone marked with a ribbon cutting ceremony attended by the Prime Minister, Malcolm Turnbull, and State Premier, Mark McGowan.

The design and construct contract was awarded to CPB Contractors in April 2015 by Main Roads Western Australia (MRWA), generating revenue to the company of approximately $160 million.

Commencing in June 2015, the Mitchell Freeway extension was completed on schedule and under-budget.

Jointly funded by the State and Federal governments, the project runs from Burns Beach Road to Hester Avenue and will improve transport efficiency through Perth’s northern suburbs, providing direct connectivity to Neerabup Road and Hester Avenue via roundabout controlled bridge intersections to manage traffic flow.

Improved safety for pedestrians and cyclists has been included in the design, with a four metre wide shared path constructed along the west side of the extension, as well as underpasses and a pedestrian bridge.

The project includes a number of sustainability trials never before incorporated in a Western Australian freeway roads project, including:

  • The use of non-recyclable glass fines in the road base layer, which provides a use for glass that is unsuitable for re-manufacture, and therefore, an alternative to land-fill.
  •  The use of energy efficient LED lighting for the roads network and pedestrian and cyclist shared path.

To facilitate the new freeway extension, the following local road upgrades were completed to better connect local communities:

  • Extending Neerabup Road from Connolly Drive to Wanneroo Road, with two lanes in each direction.
  • Widening Hester Avenue between Hidden Valley Retreat and Wanneroo Road to two lanes in each direction.
  • Widening Wanneroo Road between Flynn Drive and Hall Road to two lanes in each direction.
  • Reconfiguring the Wanneroo Road and Flynn Drive intersection, incorporating a connection to Neerabup Road.
  • Adding through and turning lanes at the Wanneroo Road and Joondalup Drive intersection.

CPB Contractors has previously undertaken a number of major roads initiatives for MRWA, including leading the Alliance that delivered the $1 billion Gateway WA Perth Airport and Freight Access project.

CPB Contractors was also selected by MRWA to deliver the northern section of NorthLink WA between Ellenbrook and Muchea. The design and construct contract involves construction of a free-flowing dual carriageway between Ellenbrook and Muchea, and will generate revenue of approximately $175 million for CPB Contractors.

Once complete, the $1.12 billion NorthLink WA will complement Gateway WA and support regional traffic volumes to commercial and industrial areas such as Malaga, Kewdale, Perth Airport and the Perth CBD.


Top: The completed Burns Beach Road interchange.
Above: Prime Minister, Malcolm Turnbull, addresses the crowd at the official opening event.