Projects
Wyaralong Interconnector Pipeline (WIP) – Trenchless Crossings
The Wyaralong Interconnector Pipeline (WIP) is a major bulk water infrastructure project supporting the development of the new Wyaralong Water Treatment Plant and strengthening regional water supply connectivity across South East Queensland.
The project includes approximately 14km of new pipeline connecting the Wyaralong Water Treatment Plant to the Southern Regional Water Pipeline, forming a critical link in Seqwater’s long-term water security strategy.
Project information
- Project Owner
- Seqwater
- Stage
- Tender (ECI Phase)
- Location
- Scenic Rim / Logan Region, QLD
- Capital Cost
- Not disclosed
- Year
- 2025
Scope
The project involved the design and construction of trenchless pipeline crossings at four key locations along the Teviot Road corridor, incorporating advanced microtunnelling and underboring techniques.
Key elements of the scope included:
- Delivery of four trenchless crossings, including three watercourse crossings and one major road crossing
- Installation of large-diameter carrier pipe within an enveloper pipe system using trenchless methods
- Design and implementation of drilling methodologies and temporary works
- Construction staging across multiple constrained and environmentally sensitive sites
- Welding, installation, and testing of carrier pipelines including fibre optic conduit integration
- Hydrostatic testing, grouting, and commissioning of pipeline sections
- Coordination with parallel pipeline construction and multiple subcontractor interfaces
Service Provided
Civil Project Partners provided detailed cost estimating and commercial support during the ECI and tender phase.
This included the development of cost estimates for trenchless construction methodologies, incorporating specialist plant, shaft interfaces, and pipeline installation works. CPP also supported methodology reviews, staging strategies, and risk identification associated with geotechnical conditions, access constraints, and environmental compliance.
