The Rozelle Interchange Works, Stage 3B (RIC-3B) is a major component of Australia’s largest ever infrastructure project. The project is a group of underground tunnels connecting the M4-M5 Link with Victoria Road (just east of the Iron Cove Bridge) and The Crescent, the Anzac Bridge, and the City West Link; this project includes to stubs to eventually connect with the Western Harbour Tunnel.
Vaughan Civil has delivered numerous specialist multi-utility treatment awards across multiple electrical contacts. One of the most critical relocations was the 33kv Transmission cable installation from Ausgrid Rozelle Substation to Westconnex substation.
Scope of works include:
- Communication liaison with all affected stakeholders
- Design of the cable pulling route
- Installation of conduits and TSB for 2 x 33kV Ausgrid feeders from Rozelle Sub-Transmission Substation (STS) to the WestConnex 3B HS01 Substation High Voltage rooms
- Installation of scaffolding and cabling pulling rollers, caterpillars and winches inside both substations
- Installation, trifurcation and termination of 2 x 33Kv Ausgrid Feeders between substations
- Cable installation completed at nights due to traffic constraints
- Installation and termination of 2 x 72 core single mode optical fibre (SMOF) protection fibres between substations
- Vaughan Civil also included multiple LV an HV relocations including Level 1 and 2 works.
Client requirements
Design — Much of the work for RIC-3B project was conducted in high-density commercial and industrial areas, developed before accurate services recording occurred. The lack of reliable project infrastructure information greatly increased the risk of unknown utilities. Our team undertook service locating and assisted JHCPB JV with the accurate recording of Class A data on the projects database. This positioned us to provide detailed clash-detection services and offer innovative solutions to improve the design performance on the project.
Traffic management and staging — The RIC-3B project was completed at a major junction of Sydney’s key traffic routes and interchanges, which made careful and considered traffic management planning an important requirement for successful delivery. Our team worked closely with project managers and stakeholders to plan, manage and provide coordinated traffic management and staging services for the utility works in some of the most congested roads in NSW. The work was completed in compliance with all traffic authority requirements and project timeline imperatives, with the minimal possible community impact.
Schedule — The scale of civil works to be completed in a condensed urban area presented a considerable risk, with multiple unknown impediments; residential and local authority stakeholder engagements; and complex change management issues regularly impacting the work. Vaughan Civil’s experienced team were an integral part of ensuring our project components were delivered on time. By self-performing our project managers were able to stage and schedule the work to drive successful outcomes.
