The recycling and re-purposing of materials throughout the construction of the light rail involved investigating and using recycled products in asphalt, recycled aggregates, re-use of existing base/sub-base material in road pavement, supplementary cementitious materials in concrete and reusing usable spoil within the alignment.

A NSW-first innovation was the use of macro synthetic fibres within the light rail concrete track. This increased concrete durability and performance, enabled more efficient construction, and mitigated potential stray current issues.

An Australian-first innovation was achieved with the use of an enhanced, more rigid, encapsulating rail boot system. The bespoke boot made the requirement of a floating track slab redundant as it provided a complete system for rail resistivity, stray current and noise and vibration attenuation requirements.

A micro-tunnel design was used under Church Street to enable more storm drainage capacity within the Parramatta CBD. The solution minimised business impacts on the key dining precinct, limited the number of utility relocations and was a key energy and water-saving initiative for the project.

To minimise the time and risk associated with utility relocations, the project team used digital modelling from the site investigation program and the use of augmented reality to coordinate the 3D model.

PLR’s 5.7-kilometre Active Transport Link has opened, connecting people to local transport, businesses and communities. The track is lit by dimmable, motion-sensor LED lighting, which reduces energy and maintenance costs while also supporting public safety.

In a NSW-first innovation, PLR designed and integrated a total of 1.3 kilometres of green track within three heritage-sensitive environments along the PLR alignment. Green track requires 81% less concrete compared to standard embedded track form.

Through the Tree Offset Strategy, the project is delivering revegetation actions throughout the Parramatta Local Government Area increasing tree individuals by 5,500+, thereby improving urban heat, community health and increasing habitat for local fauna.

To minimise impacts on a significant Grey-headed Flying Fox (GHFF) camp within Parramatta Park, the project developed and implemented a specific Construction Monitoring Program to observe and track the behaviour of the camp throughout construction. The program used a tiered approach of regular monitoring by an experienced fauna specialist and trained project staff, activity-based monitoring during higher-risk activities and a stress-response plan in the event of emergencies. The program was used as a successful example of how to minimise impacts on this protected species in an Australian Government best practice guideline.

In a NSW-first, the project team used a weathered steel solution for the long-span steel through truss structure, which will minimise future maintenance and disruption to rail operations. The installation approach was also innovative with the use of a self-propelled gantry system to lift the bridge deck and roll it across James Ruse Drive to its final seating position completed in a single overnight road occupation.

As Australia’s second oldest city, Parramatta has a rich and varied history of Aboriginal and European significance. This unique history was respected in bespoke designs, developed in consultation with Heritage NSW, such as using wire-free operations in heritage areas, thin resin-bound footpath pavements to avoid disturbing unmarked graves, avoiding unnecessary removal of heritage bridge abutments, lighting solutions to minimise visual clutter and salvage/reuse of sandstone and bricks.

Heritage interpretation was incorporated into the design including paving inlays, interpretive signage, landscaping and an indigenous garden.

Archaeological findings were shared with the community in a series of online webinars, and in 2022 more than 1,000 locals and visitors to Parramatta took the opportunity to immerse themselves in the Parramatta Light Rail Heritage exhibition: A Journey through Time.

The free exhibition, which ran for three months, featured local historical information and artefacts that had been carefully uncovered and preserved during the construction of PLR.