In September, Melbourne became the focal point for Australia’s underground infrastructure and utilities sector. The Melbourne Convention and Exhibition Centre (MCEC) hosted both No-Dig Down Under and Converge, bringing together international experts, local utilities, and technology providers in a shared space for discussion and discovery.
Just across the river at Marvel Stadium, the Australasian Society for Trenchless Technology (ASTT) Awards honoured the projects and people advancing trenchless practice. Together, these three gatherings created a rare moment of alignment for the industry, with technical innovation, operational practice, and community outcomes examined in close succession.
The emphasis extended beyond engineering excellence. Trenchless methods, known for minimising surface disruption, were positioned as part of broader conversations around sustainability, customer expectations, and infrastructure resilience.
The conference floors showcased cutting-edge equipment and digital tools, while the ASTT Awards recognised leaders shaping the sector’s culture and standards.
Converge added another dimension, exploring how utilities can connect with customers and adapt to rapid digital change.
Taken together, these events underscore the central role of trenchless technology that Australia relies on to maintain and expand critical infrastructure. They also emphasised the importance of collaboration among utilities, contractors, regulators, and innovators in ensuring that technical progress translates into lasting public benefit.
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Driving innovation underground
No-Dig Down Under has long been the premier stage for trenchless innovation in the region, and this year’s program reflected both the pace of technical progress and the industry’s growing confidence.
Across the exhibition floor, contractors, suppliers, and utilities explored the latest in drilling rigs, microtunnelling systems, and rehabilitation technologies.
Digital monitoring tools and data-driven planning platforms also drew attention, signalling a shift toward integration of field expertise with real-time decision support.
For many delegates, the opportunity to see live demonstrations and speak directly with international suppliers reinforced the importance of face-to-face exchange in advancing underground infrastructure practice.
The driving force behind this technical platform is the ASTT.
Established to promote trenchless methods across Australia and New Zealand, ASTT provides the professional backbone for the sector through training programs, knowledge sharing, and advocacy.
It also serves as the key regional link to the International Society for Trenchless Technology, ensuring that local practitioners are connected to global best practice. By convening engineers, asset managers, and suppliers under one roof, ASTT has positioned No-Dig Down Under not only as a showcase for equipment but as a proving ground for the ideas and standards that shape day-to-day operations.
This dual role of technical exhibition and professional forum underscores how trenchless technology is evolving from a specialist niche to a core component of infrastructure planning.
From large-scale tunnelling projects in dense urban centres to targeted pipe rehabilitation in regional towns, the innovations displayed at MCEC reflected the versatility of methods that reduce disruption, extend asset life, and deliver long-term cost efficiency. With ASTT at the helm, the sector continues to translate technical ingenuity into practical, deployable solutions.
Operational gains in focus
Beyond the showcase of equipment and techniques, No-Dig Down Under and Converge highlighted how trenchless methods are being applied across Australia’s networks.
For utilities and councils, the focus is increasingly on practical deployment and how these technologies can be embedded into capital works, maintenance programs, and emergency responses.
Case studies shared at MCEC demonstrated how trenchless approaches are helping water corporations replace ageing pipelines under busy urban corridors, upgrade stormwater assets in constrained sites, and extend sewerage networks with minimal surface disturbance. For local governments, the operational value lies in the ability to complete projects faster and with fewer impacts on residents and businesses.
Delegates heard from contractors who described how improved site investigation and digital modelling are changing the way projects are planned. By combining geotechnical data with trenchless methods, teams can mitigate project risks, anticipate ground conditions, and prevent costly delays.
On-the-ground efficiencies are also being realised through the automation of tasks that once relied heavily on manual labour, such as robotic cutters and CCTV-equipped inspection crawlers, which enable faster condition assessments. These advances not only reduce downtime but also mitigate safety risks for crews working in confined environments.
The operational conversations also underlined the importance of collaboration.
Contractors emphasised the need for clear communication with asset owners to align expectations, while utilities highlighted the benefits of early engagement in identifying the right trenchless method for the task.
Across both No-Dig Down Under and Converge, a consistent theme emerged: trenchless technology is no longer a specialised alternative but an integral part of the operational toolkit for maintaining reliable, resilient networks.
Sustainability as standard
Sustainability was a key theme that framed much of the discussion across all three events.
At No-Dig Down Under, environmental benefits were not treated as secondary outcomes but as core measures of project success.
Presentations highlighted how trenchless construction reduces carbon footprints by minimising excavation, transportation, and reinstatement. Utilities reported measurable reductions in greenhouse gas emissions from projects that avoided traditional open-cut trenching. At the same time, contractors shared data on how reduced surface disruption translates into lower fuel use and less waste sent to landfills.
The ASTT Awards reinforced this narrative, celebrating projects that strike a balance between engineering excellence and environmental responsibility.
HDI Lucas and Spiecapag’s Jansz IO HDD Project, winner of New Installation Project of the Year, showcased innovation under sensitive environmental conditions on Barrow Island, deploying biodegradable drilling fluid and automated polymer mixing to minimise impact. Meanwhile, Tunnel Vision’s Offshore Overboard Pipe Reline, recognised as Rehabilitation/Renewal Project of the Year, delivered a world-first offshore vertical CIPP liner installation, extending the life of a DN600 steel water pipe under extreme conditions without replacement.
Both projects demonstrated that innovation and sustainability are inseparable in trenchless practice.
Converge added another layer by exploring how circular economy thinking is reshaping utility strategies.
Panels examined opportunities to design waste out of the system, reuse resources, and embed sustainability into procurement.
Customer-facing conversations also revealed growing community expectations that utilities will demonstrate environmental responsibility in addition to reliable service delivery.
For many attendees, the clear takeaway was that sustainability is not a future obligation but an operational reality.
Together, these perspectives highlighted how trenchless technology in Australia is enabling a more sustainable model of infrastructure delivery. By reducing disruption, extending the life of assets, and embedding circular practices, the sector is aligning technical progress with environmental outcomes in ways that are increasingly visible to regulators, customers, and the wider community.
Trust through trenchless
Technical innovation and sustainability will only achieve their full impact if communities trust the organisations delivering them.
That theme ran strongly through Converge, where panels on customer experience unpacked the complexity of meeting rising expectations while managing essential services.
Discussions emphasised that customers want more than a reliable supply; they expect transparency, fair pricing, and proactive communication about projects that affect their neighbourhoods.
Digital tools were showcased as ways to strengthen engagement, providing households with greater visibility into their usage, billing, and the work happening in their streets.
Recognition through the ASTT Awards also played a part in reinforcing community confidence.
By celebrating projects that combined technical excellence with minimal disruption to businesses, schools, and transport networks, the Awards sent a clear signal that social outcomes matter as much as engineering performance.
The Trenchless Woman of the Year, Dannielle James, exemplified this principle. As the only woman believed to own and lead two trenchless businesses in Australia, she was recognised for championing equity and fostering stronger links between industry and community. Similarly, Jarred Wray, named Young Person of the Year, was applauded not only for technical skill but also for mentoring peers and embedding sustainability practices in day-to-day work.
Speakers at No-Dig Down Under also reflected on the role of trenchless technology in safeguarding liveability. Fewer road closures, reduced noise, and faster project delivery translate into tangible benefits for the community.
For local governments and utilities alike, these advantages help demonstrate that public funds are being invested responsibly. As one delegate noted, the industry’s long-term licence to operate depends not only on technical and financial performance but also on the trust it earns from the people it serves.
In this sense, trenchless technology in Australia embraces more than a technical solution; it is part of a broader social contract. By aligning operational efficiency with community expectations, the sector continues to strengthen its credibility and legitimacy.
Looking ahead together
Taken together, No-Dig Down Under, the ASTT Awards, and Converge offered more than a series of technical presentations and networking opportunities. They created a comprehensive snapshot of the sector’s current state and its future direction.
At MCEC, delegates explored the tools and methods driving efficiency; at Marvel Stadium, industry leaders were recognised for their contributions; and through Converge, utilities and technology providers examined how digital transformation can bring customers closer to the services they rely upon.
What united these moments was a shared recognition that trenchless technology is not an isolated discipline but a cornerstone of how modern infrastructure is delivered.
From drilling rigs to billing systems, from carbon savings to community engagement, the conversations across Melbourne highlighted the interconnectedness of technical progress, operational practice, sustainability, and trust.
The industry’s ability to bring these strands together will determine how successfully it navigates the demands of climate change, urban growth, and shifting public expectations.
The ASTT Awards also reminded delegates of the power of individual leadership.
Stuart Harrison, named Menno Henneveld Person of the Year, was recognised for nearly three decades of innovation, including the development of the Vermeer AXIS and AdaptX guided boring systems. His contribution reflects the spirit of the trenchless community, combining technical creativity with global collaboration and a commitment to raising standards.