Butler rail bulk earthworks

Butler rail bulk earthworks

2010 - 2012
Clarkson WA, Australia
Western Australian Government, Public Transport Authority


Earthworks to prepare the railway alignment, extending from Hester Avenue to join the existing earthworks south of Landbeach Boulevard.


The Butler Rail Extension Project was a $240 million project to extend the Joondalup rail line to Butler. It involved extending the existing rail line approximately 7.5km north of the existing Clarkson Station to service Perth’s rapidly growing north-west suburbs. With more than 2,000 passengers expected to board at Butler Station every day, the project eased the pressure on the Mitchell Freeway and major road corridors.

Passenger services on the new line started in 2015.

Features of the overall project included:

  • A park ’n’ ride station with approximately 930 car bays
  • 11 new buses to provide feeder services into Butler and Clarkson stations
  • Opportunity to positively influence land use around the station as a Transit Oriented Development
  • Four additional railcars have been acquired to accommodate the extra passengers

A significant factor affecting the project was the complexity of operations due to restricted access and limited work area and the requirement to complete the works as close as possible to the allocated timeframe. This was further complicated by PTA adding a series of contract amendments to the project that resulted in the required work tripling in scale.

Included in the additions was a requirement for:

  • Under-track boring at the Nowergup Depot – during liv railcar operations
  • Butler Transit Station forward works
  • Earthworks to Nowergup Depot yard – 200,000m³
  • Additional up main re-alignment (additional rail track) – bulk earthworks 167,000m³
  • Nowergup access road – bulk earthworks 30,000m³
  • Supply and installation of HV electrical pit and pipe at Nowergup Depot
  • Supply and installation of HV cable works and services relocation at Nowergup Depot
  • Supply and installation of tech span arch underpass and reinforced earth walls to Nowergup access road

The magnitude of the civil work required achieving the original contract within deadline plus the additional project works. The changing design requirements within the original deadline were immense.

RJV was the winner of the Civil Contractors Federation ‘2012 Earth Awards’ (WA) for the Butler rail extension project.

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