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This project, focused on the Interchange section running from Haberfield to St Peters, was a large-scale infrastructure development aimed at connecting two major sections of Sydney’s road network. The project involved the installation of a number of key backend services across a 7.5 km stretch, including electrical conduits for low and high voltage systems, telecommunications infrastructure for traffic and emergency control, stormwater management and comprehensive fire and deluge systems. The scope also included extensive commissioning works for mechanical and electrical packages.
During the pandemic the project was having challenges supplying self-performed scope of skilled workforce to meet the deadline. Virtus utilised our established labour division of qualified electricians, drilllers, boilermakers and trade assistants to assist with the labour gap. This was due to our proactive approach to achieving compliance, resourcing and safety records. By engaging our highly experienced workforce, we were able to compress crew sizes which allowed us to complete this contract with less man hours.
The project lacked a structured flushing and verification process for drainage systems. Virtus was aware that if flushing was eventually attempted after shotcreting, it led to water ingress issues, compromising tunnel integrity and requiring corrective measures. This was further complicated as flushing was required during the construction period of some sections to meet the maintenance frequency requirements before handover. To address this, Virtus developed and implemented a comprehensive QA system, similar to a test-and-tag process, ensuring that each strip drain was inspected, logged, and marked at every stage. This approach provided clear documentation for engineers
During the pandemic the project was having challenges supplying self-performed scope of skilled workforce to meet the deadline. Virtus utilised our established labour division of qualified electricians, drilllers, boilermakers and trade assistants to assist with the labour gap. This was due to our proactive approach to achieving compliance, resourcing and safety records. By engaging our highly experienced workforce, we were able to compress crew sizes which allowed us to complete this contract with less man hours.
With up to 15km of twin tunnel, each station site was managed by a different contractor. Virtus navigated multiple safety standards, SWMS approvals, and compliance processes requiring approval from both Systems Connect and the individual station contractor, leading to challenges with approval timelines and document control. To keep the project moving, Virtus assigned experienced personnel to manage SWMS approvals, standardise documentation, and coordinate submissions through TeamBinder. By ensuring compliance requirements were met upfront and proactively managing approvals, we reduced bottlenecks, streamlined workflows, and maintained continuous site progress across all locations.
With three separate tunnelling packages delivered by different joint ventures, maintaining a consistent, highly skilled workforce was a significant challenge. Before Virtus joined, the project was experiencing delays due to labour shortages and skill gaps, particularly in high-risk tunnelling and mechanical installation work. Virtus Infrastructure provided a fully resourced, highly trained workforce, ensuring the right mix of fitters, boilermakers, electricians, riggers, and trade assistants. By managing workforce deployment in alignment with site-specific requirements, we helped to stabilise labour supply, improve project continuity, and reduce downtime, ensuring tunnelling and station excavation works progressed without disruption.
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Virtus Infrastructure acknowledges the Traditional Custodians of the land on which we operate and build. We pay our respects to Elders past, present, and emerging and recognise their ongoing connection to land, waters, and community. We are committed to fostering respectful partnerships and supporting sustainable infrastructure that honours the history, culture, and traditions of Aboriginal and Torres Strait Islander peoples.