Our Earthworks Projects

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Bird in Hand Wastewater Treatment Plant

The new treatment plant is located in Woodside in the Adelaide Hills, and treats wastewater from several catchments including Lobethal, Woodside, Charleston and Inverbrackie. It replaces an existing plant built in 1965 which consisted of a series of 10 treatment lagoons.

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Lower Lakes Irrigation Project

The Lower Lakes Irrigation project was developed by the SA government to urgently provide irrigation water security for drought-threatened horticulture and viticulture industries in the Langhorne Creek and Currency Creek region.

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Gallipoli Underpass

The Gallipoli Underpass is located at the junction of Adelaide’s two busiest arterial roads, South Road and Anzac Highway. The project involved the grade separation of the two roads via an underpass that includes a 31 m span bridge and included construction of extra lane width.

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WPS1—Christie Creek Upgrade

The award-winning Christie Creek Upgrade is a $15m design and construct project which provides stormwater detention and flood mitigation.

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Cooma Water Supply Augmentation

The project involved the design, development and construction of two post-tensioned, precast concrete tanks and associated pipework at Royal Hill (2.6 ML) and Church Hill (6.6 ML).

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Lake Manchester Dam Upgrade

Lake Manchester Dam was built in 1916 and required significant upgrade to meet ANCOLD safety guidelines. The spillway capacity was deemed inadequate to cope with large floods.

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Glenelg to Adelaide Parklands (GAP) Recycled Water Project

This landmark state and federal government funded project provides a long-term solution to treat and supply recycled water from the Glenelg Wastewater Treatment to the Adelaide CBD and parklands. 

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