Tonkin + Taylor played a pivotal role in the Main Contract Works by providing comprehensive, detailed design services. Our contributions included geological and geotechnical interpretation, developing a longitudinal section, and establishing design parameters for pile foundations, abutment approaches, retaining walls, and embankments. We meticulously developed detailed design submissions while conducting independent reviews to ensure compliance with project requirements.

To support the core design packages, such as the Avon River Bridge, Flood Relief Structure, Track, and Civil components, we generated geotechnical design reports. These reports provided crucial technical insights and recommendations necessary for the project’s success.

Our expertise extended to offering technical advice on scour depth assessment and associated protection options for the Avon River Bridge and Flood Relief Structures. We assessed liquefaction potential and conducted geotechnical site investigations to gather essential data for informed decision-making.

Throughout the project, we provided construction phase services to support the implementation and monitoring of geotechnical aspects. This included offering guidance on scour protection, addressing liquefaction risks, and ensuring compliance with design intent and regulatory requirements.

Tonkin + Taylor’s contributions were instrumental in enhancing the project’s outcomes, ensuring the integrity and resilience of the infrastructure. 


  • Geological + geotechnical interpretation
  • Development of detailed design 
  • Independent review of design deliverables
  • Scour depth assessment
  • Protection options + Flood Relief Structures 
  • Assessment of liquefaction potential


  • Regional Rail Victoria


  • 2019 – 2021

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