Corporate Members

At Gunlake Concrete and Gunlake Quarries, we stand as the preeminent supplier of construction materials to the Greater Sydney region. Gunlake isn’t just a company; we are a proud Australian-owned family legacy, spanning four generations of excellence in the quarrying and concrete industry within Australia. Gunlake’s journey began in 2007 with a single concrete plant and ambitious plans for a quarry. Today, in 2024, we have not only realised those dreams but have exceeded them. With five operational concrete plants and another one in the pipeline, we’ve set a new standard for industry-leading service and the delivery of high-quality products.

Dowsing Group is an Australian owned and operated company that specialises in concrete slipforming, diamond grinding and grooving technologies. Seovic Civil which was acquired by Dowsing, pioneered slipforming in Australia for over thirty years and as a result, it is almost impossible to travel anywhere in Australia without seeing or driving on work that has been completed by Seovic Civil.

GOMACO Corporation manufactures curb and gutter machines, concrete slipform pavers, placer/spreaders, trimmer/placers, cylinder finishers, canal machinery and accessories ideal for any concrete construction project. GOMACO's quality management system is ISO 9001:2015 certified.

In 1987, John Seymour and Garry Whyte started a small civil construction company in Queensland. More than three decades on, the company they founded has grown exponentially. This is in no small part thanks to the way our smarter partnerships shape the quality of every project we undertake, of our clients’ experiences with us, and of the way we respond to business opportunities.

The WIRTGEN GROUP is an internationally operating group of companies in the construction equipment industry. We owe our strength to the five traditional product brands WIRTGEN, VÖGELE, HAMM, KLEEMANN and BENNINGHOVEN. As technological leader, we can offer our customers mobile machine solutions for road construction and road rehabilitation, plants for mining and processing minerals or recycling material and for the production of asphalt

When one of our founders first started making cement in 1882 there were just over two million people living in Australia. Today over 25 million people are able to benefit from Adbri’s high quality local construction materials that are building a better Australia.

As a fully integrated firm with offices in 20 locations across Australia and New Zealand, we connect knowledge and experience locally and across our global network to help clients solve their most-complex challenges. From high-performance buildings and infrastructure to resilient communities and environments, our creative solutions to building great spaces and places transform urban environments and differentiate our clients’ projects

We are a global collective of designers, engineers and technical experts. We use imagination, technology and rigour to shape a more sustainable world. Big ideas, independent minds, deep technical expertise. Find out what makes Arup different.

“Concrete & Civil Solutions is a leading provider of integrated concrete production and civil construction services, delivering high-quality infrastructure solutions across Australia. Our expertise spans concrete batching, civil construction, material processing, and geotechnical testing, ensuring efficient, cost-effective, and sustainable project delivery. Backed by a team of experienced engineers and industry specialists, CBS leverages state-of-the-art technology, precision engineering, and an unwavering commitment to quality to support projects in transport, aviation, resources, and public infrastructure.”

Eifers is a family-owned Australian company with an agile and innovative approach to civil construction. Founded by the Eifermann family in 2003 as a small business, we soon grew and now focus primarily on civil construction and critical infrastructure works.

HBM Group offers a low-cost professional association management service that focuses on the specific needs of your industry association and members. Our vision is to develop long-term, mutually sustainable relationships with beneficial outcomes. We provide clients with a range of services tailored to your association’s specific needs, requirements and budget.

The Department of Transport and Main Roads, known often as TMR, is a department of the Queensland Government, formed in April 2009 with the merger of the Queensland Transport and the Department of Main Roads

We are driving positive change in the road and pavement industry. After years of hard work and research, we have managed to successfully introduce Roller Compacted Concrete (RCC) as an innovative and sustainable road construction method in New Zealand. We continue to explore alternative methods, with the goal to provide the public and private sector with the most cost-effective and environmentally friendly road/pavement solutions, to minimise the need for frequent maintenance and repairs, while ensuring the safety and durability of roads and pavements. We strive to be leaders in the industry by continuously researching and developing new technologies that optimise efficiency, reduce waste, and contribute to a cleaner, more sustainable future. We aim to support road and pavement asset owners and engineers to make the right decisions.

Founded in New Zealand in 1959 as a specialist environmental and engineering consultancy, Tonkin + Taylor (T+T) owes its success to market-leading technical expertise, a commitment to competing on quality and the exceptionally high calibre of our technical specialists. T+T has an established team of experienced designers and technicians in Australia who specialise in the investigation and analysis required to develop practical and cost-effective pavement solutions for our clients.