Great Eastern Highway Realignment Wooroloo


Main Roads Western Australia




Construct Only

Contract Value


Start Date

July 2021

Completion Date

February 2022
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The Great Eastern Highway Upgrades in WA were undertaken to improve road safety for all users, improve freight productivity and improve efficiency and network reliability.

Decmil was awarded a contract by Main Roads Western Australia to undertake realignment works at the Great Eastern Highway in Wooroloo.

The project included realigning a two-kilometre stretch of the highway to remove three substandard curves and improve safety and visibility.

The new section of the highway was built to the south of the current highway, on an alignment largely already cleared. The project also involved building a new intersection with Old Northam Road further to the south and reconstructing the Wooroloo Prison Farm access road. Removing the redundant surfacing along the existing alignment was included in the scope of work.


The project team salvaged and donated two truckloads of branches and hollows to the Kaarakin Black Cockatoo Conservation Centre in Perth. These were used to create enclosures for the Cockatoos at the centre.

The project team also salvaged several grass trees prior to clearing and donated them to the Centre, which rescues these endangered wild black cockatoos.

The project was successfully completed in April 2022.

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