Warringah Freeway Upgrade - ISCouncil
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Warringah Freeway Upgrade

Project Details

  • Project Owner: CPB Contractors Pty Limited
  • Rating Type: Design
  • Location: NSW
  • Rating Level: Leading
  • Rating Score: 78.78
  • IS Project manager: Sarisha Hurrisunker
  • Stakeholders: Transport for NSW (TfNSW) ,Jacob Arcadis Joint Venture ,CPB DT Infrastructure Joint Venture

Description

The Warringah Freeway Upgrade (WFU) is a major NSW Government infrastructure project to support Sydney's growth. 

  • It will connect the new Western Harbour Tunnel and Beaches Link (WHTBL) motorways to the existing network, enhancing connectivity and safety for public transport, freight, and private vehicles. 
  • The project will improve the journey experience for current Warringah Freeway users. 
  • It will boost transport capacity around the Harbor CBD and improve connectivity to and from the Northern Beaches. 
  • The upgrade is being delivered by a joint venture of CPB Contractors and DT Infrastructure. 
  • It includes surface road upgrades, structural works, and ancillary works over an approximately four-kilometer section of the freeway. 
  • The focus is on simplifying traffic flows, enhancing wayfinding, and enabling works for the new WHTBL and Northern Beaches Link. 

Rating Highlights 

Category  Credits  Achievements/Risks 
Energy and Carbon  Ene- 1  The Project achieved a verified level of 3 with a score of 11.75. 

The project prioritized sustainability through innovative solutions like SamiFrid pavement reinforcement and strategic lighting optimizations demonstrating the commitment to environmental stewardship. 

  1. SamiGrid Application: SamiGrid reinforced pavements reduce asphalt thickness, enhance durability, and cut maintenance emissions by 54%. 
  1. Lighting Optimization: Pedestrian lighting removal and design adjustments aligned Base Case emissions with the Design Case, yielding marginal energy savings. 
  1. Operational Fuel Efficiency: Quantified fuel savings from reduced asphalt maintenance activities using specific asphalt paver and roller rates ensured comprehensive operational greenhouse gas emissions reductions. 

These initiatives collectively contributed to achieving an 84.62% reduction in GHG emissions and a 0.3% reduction in energy consumption excluding offsets and purchased GreenPower compared to the Base Case. 
Materials  Mat-1  The Project achieved a verified level of 2.7 with a score of 9.26. 

Here are the noteworthy sustainability achievements advocating commitment to responsibly managing resources and environmental impacts by monitoring and modelling: 

- Implemented SamiGrid for pavement reinforcement, reducing asphalt thickness and maintenance emissions by 54%. 

- Retained existing road furniture and noise walls after detailed design assessment, avoiding decommissioning and replacement, contrary to BAU practices. 

- Implemented design optimizations post-Concept Design, such as reducing drainage line lengths and spacing between PSC planks, contributing to a 1.3% reduction in IS EnviroPoints. 
Urban and Landscape Design  Urb-1  The Project achieved a verified level of 3 with a score of 5.22. 

The project embodied a holistic approach to urban development, integrating climate resilience, and community connectivity. Through meticulous planning and strategic initiatives, it aims to enhance sustainability while preserving heritage and improving urban liveability. 

  • Incorporated site-specific context and climate resilience 
  • Enhanced accessibility and pedestrian infrastructure 
  • Retaining and integrating historic elements 
  • Promoted public transport and cycling infrastructure 
  • Utilized eco-friendly and durable construction materials 
  • Increasing and preserving open spaces 
  • Ensured adherence to sustainability standards throughout implementation.

Certification Date

23/7/2024

 

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