Lloyd Street Rail Corridor Grade Separation Project – Midland McConnell Dowell – Main Roads Western Australia

  • Client:
     McConnell Dowell for Main Roads WA
  • Location:
    Midland
  • Project Type:
    Rail Corridor Grade Separation
  • Timeline: 2014-2015

Project Overview


Alliance Surveying was engaged to provide surveying services for the Lloyd Street Rail Corridor Grade Separation Project in Midland. Delivered by McConnell Dowell for Main Roads Western Australia, the project eliminated a key level crossing by separating rail and road traffic, improving safety and reducing congestion in one of Perth’s busiest freight and commuter corridors.

Our licensed surveyors led a skilled team of field staff and technical personnel to provide precise and efficient surveying across all phases of the project. With safety and accuracy at the forefront, we ensured all deliverables met the strict specifications required by Main Roads WA and the project delivery team.


Key aspects of the project include:

Scope & Responsibilities

Our scope of work included:

  • Establishing and maintaining control networks along the corridor.
  • Precision set-out for bridge structures, road approaches, and utility relocations.
  • Topographic and feature surveys for design teams.
  • As-built verification surveys to confirm compliance with engineering tolerances.
  • Digital survey deliverables formatted for integration into project systems.

Challenges & Outcomes

The project involved surveying in a live rail and urban environment, requiring strict safety protocols and close coordination with multiple contractors. Our team successfully managed access, timing, and data accuracy to avoid disruption to train and road users.

We supported the project with our fast turnaround guarantee, delivering survey data within 48 hours to keep construction activities on track. Through our fixed-price agreements, clients had complete cost certainty, while our ability to mobilise within 7 days ensured we integrated seamlessly with McConnell Dowell’s delivery schedule.

Get in Touch

From urban grade separations to large-scale infrastructure works, Alliance Surveying provides accurate, reliable, and cost-effective surveying solutions across Western Australia.

Reach us at info@alliancesurveying.com.au or contact our team today to discuss your next rail or road project.

Frequently Asked Questions

The project removed a dangerous level crossing in Midland by separating rail and road traffic, improving safety and reducing congestion.

McConnell Dowell delivered the project for Main Roads Western Australia, with Alliance Surveying providing surveying services.

We delivered control networks, set-outs, topographic surveys, and as-built verification surveys.

Accurate surveying ensures bridges, road approaches, and utility relocations are constructed to strict engineering tolerances.

We followed strict safety protocols and coordinated with project managers to complete work safely and efficiently.

We provided outputs within 48 hours, supporting timely progress for design and construction teams.

Yes, licensed surveyors led the work, supported by skilled field and technical staff.

Urban conditions, live rail operations, and multiple contractor interfaces required detailed planning and coordination.

We worked under a fixed-price agreement, covering any unexpected costs ourselves to ensure transparency.

Yes, we have extensive experience delivering surveying services for rail, road, and urban infrastructure projects across WA.

Why Alliance Surveying?

Fast Turnaround:

All quotes are delivered within 2 days, guaranteed.

Swift Project Start:

Job commencement is guaranteed within 7 days of approval, so your project won’t face delays.

Transparent Pricing:

Our quotes are fixed; if unexpected costs arise, we cover the difference, ensuring no surprise charges.

Fully In-House Team:

We never outsource. Every step of your survey is handled by our own team of 30 experienced professionals.

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