Category 6 Winner
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2016 CCF WA EARTH AWARDS CATEGORY 6 WINNER GATEWAY WA Gateway WA Perth Airport and Freight Access Project Client: Main Roads WA he $1 billion Gateway WA • Upgrading a fifth grade separated interchange, Western Australia’s first project was the largest ever road interchange single point urban interchange was Tconstruction project undertaken • Constructing 11 bridges as part of designed by the project team. Top down by Main Roads Western Australia. The the interchanges construction was undertaken using project has formed a new ‘gateway’ • Local road improvements in the continuous flight auger (CFA) piling, to the city of Perth that expresses the Kewdale Industrial Precinct which was adopted to allow discrete dynamic, creative and rapidly evolving • Constructing around 21 kilometres portions of the bridge to be constructed character of Western Australia. of shared path and local connections for separately as determined by traffic The $1 billion road construction pedestrians and cyclists, including seven phasing. The delivery of this construction project comprised: underpasses and one footbridge technique departed from Main Roads’ • Widening seven kilometres of one • Installing approximately seven standard delivery methods and the of Perth’s main arterial roads, Tonkin kilometres of noise/screen walls Gateway WA project team worked with Highway, to six lanes • Establishing Main Roads’ largest Main Roads to write the specifications • Upgrading three kilometres of ever landscaping program of more than for CFA piling in Western Australia. another of Perth’s main arterial roads, one million plants Gateway WA’s extensive use of Leach Highway, to expressway standard Building the three-level ‘Grand temporary steel barriers – lightweight • Constructing four new grade Gateway’ interchange at the end of the and easy to handle compared to concrete separated interchanges (including one Perth Airport runway provided a unique – set a new benchmark for the state that is fully free flowing) construction challenge with aviation and resulted in a safer work zone for constraints and high groundwater levels construction operations and personnel. to contend with. Innovative design Around 5.9 million tonnes of bulk and construction solutions, including materials were needed for the project. a slender design to reduce the overall This was managed through reducing the interchange height, enabled the team amount of material being sent to landfill, to construct a new main access point to reusing material from other projects Perth Airport. and recycling material such as soil. The The first single point urban remediation of material from nearby sites interchanges in Western Australia were for reuse saved the project significant constructed, improving both efficiency sourcing and transportation costs. In and safety for road users. The innovative 2016, the project achieved the second ‘tennis ball’ configuration used for highest Infrastructure Sustainability (IS) the Roe Highway/Berkshire Road rating for a completed infrastructure interchange is the first time this type construction project in Australia. of interchange has been constructed in The project was completed nearly Australia. a year ahead of the original contract To overcome site limitations at schedule and under budget, as a result the Leach Highway/Abernethy Road of project efficiencies. .