Orange Springs Road Upgrade

Orange Springs - Road Design - gravel

About the project:

Porter Consulting Engineers were happily engaged by the Shire of Gingin to undertake detailed design of unkerbed rural road upgrade with re-profiling and widening of 17.8km for Heavy Vehicle (HV) route between Brand Highway and Cowalla Road. Orange Springs Road is part of the Agricultural Lime Network from Lancelin to the Wheatbelt. Upgrading of the road network was identified to accommodate the current and increasing movement of B-doubles and pocket road trains transporting lime and other agricultural commodities. Investigation and redesign of horizontal and vertical curves was also a component of the design.

Project detail:

PCE provided technical advice and guidance to the survey specification to enable its procurement by the Shire. Survey was undertaken by Links Surveying, we then prepared analysis and detailed design of the drainage (culverts, headwalls and v-drains), road and intersection works. 

PCE prepared detailed design of the road horizontal and vertical alignment to meet Austroads and Main Roads Western Australia (MRWA) standards. We prepared design options and liaised with the Shire to deliver an appropriate design that was fit for purpose within the Shire’s construction budget limitation and project completion timeframes. 

Staged construction has occurred following completion of the detailed design drawings. Evan Williams was the lead engineer and Doug Eames prepared the design drawings. At all stages, Porter Consulting Engineers worked with the Shire to deliver the project.  The project was undertaken during 2019-2020 and had a project value of $5.2M.

Project Requirements

  • Investigate, design and document the proposed nominal 17.8km section of road to comply with relevant road standards.
  • Identify any significant carriageway geometry and drainage issues.
  • Incorporate three intersections (Cowalla Road, Fernwood Glen & Brand Hwy) and multiple property rural commercial accesses into the design process.
  • Prepare signing and pavement marking drawings for submission to MRWA.

Key Challenges/Management Strategies

  • Adjusting the carriageway horizontal and vertical alignment to not exceed limitations of roadside vegetation clearing boundaries while adhering to Austroads Design Guidelines.
  • Arranging for the overhead power lines along the road to be assessed by Western Power for adequate clearance to finished road levels in areas where the proposed road is in fill.

Orange Springs Road Upgrade

Project Gallery