William and Barrack Street Bridge Protection Screen - Construction

Background

The Public Transport Authority (PTA) is initiating a safety enhancement project for the William Street (Horseshoe) Bridge and Barrack Street Bridge, located at either end of Perth Train Station. These bridges span multiple electrified railway lines and have been the site of repeated safety incidents, including trespassing and the throwing of objects into the rail corridor. These incidents pose serious risks to public safety and cause significant operational disruptions.

Both bridges are heritage-listed structures, and any modifications must be undertaken with sensitivity to their historical and architectural significance. The proposed works have been designed to preserve the heritage value of the bridges while addressing critical safety concerns.

To mitigate these risks, PTA has resolved to install protective screening on both bridges. A preferred design solution has been selected, involving X-Tend mesh screens with profiled outward angled structural posts inside of the existing bridge balustrade. The design minimizes visual impact through colour-matching with the bridge surroundings and complies with heritage requirements.

The protection screens are expected to:

• Reduce incidents of trespass and object throwing
• Enhance safety for the public and rail staff
• Improve service reliability
• Protect critical infrastructure
• Align with PTA’s broader safety and risk mitigation strategies

This Request invites qualified contractors to submit proposals for the supply, fabrication, and installation of the protection screens for William and Barack Bridges in accordance with the approved design documentation. The contract must also comply with all relevant heritage, planning, and authority requirements, including coordination with applicable regulatory bodies.

Scope of Works

The overall scope includes, but is not limited to, the following:

• Preparation of required Project Management Plans
• Conduct a dilapidation survey of surrounding infrastructure and assets prior to the commencement of works
• Implement all required temporary works, including traffic and pedestrian management measures and access provisions
• Relocate, protect, and reinstate existing services where conflicts with the proposed works are identified
• Execute all construction activities in accordance with the approved detailed design, ensuring no disruption to normal train operations and maintaining the safety of the public, commuters, and workers at all times
• Reinstate the footpath and associated bridge structures as part of the works, ensuring no damage to existing elements, including but not limited to balustrades, soffits, and surrounding infrastructure
• Carry out all works in accordance with relevant standards, preserving the integrity of existing structures and complying with all applicable regulatory, heritage, and operational requirements.

The scope includes two separable portions (SP) including:

• SP1 - William St Bridge; and
• SP2 – Barak St Bridge.

For further details of the scope of works, refer to PTA250085 - AS4000 (Book4) RFT Scope of Works.

Site Visit 

A site visit will be held at Horseshoe Bridge, William Street, Perth on 10 December 2025 10:00 AM.

A briefing session will be held for all potential Respondents at the Horseshoe Bridge at William St, Perth WA 6000 on insert Wednesday, 10 December 2025, at 10am. The meeting point will be next to Yagan Square.

Respondents intending to attend the briefing session must contact the enquiries officer nominated on page 1 of the Request to register by no later than 5:00pm, Monday, 8 December 2025.

Important Personal Protective Equipment (PPE) Requirements, including closed-in footwear, long pants and an orange high-visibility shirt or long-sleeved shirt with an orange high-visibility vest. The Public Transport Authority will not provide this PPE. Attendees without the correct attire will not be admitted.

Note: Attendance is optional but it is highly recommended to attend to ensure respondents fully understand the site constraints and staging requirements. This site briefing will allow attendees to inspect both bridges.