To support the growth of Lumsden Point, Main Roads WA is upgrading key freight and logistics infrastructure in the Pilbara, including Great Northern Highway and Pinga Street. As part of the works, Geoquest Australia is designing and supplying mechanically stabilised earth (MSE) walls, precast concrete wall panels, and bridge abutments—including the first use in Western Australia of Geoquest’s innovative GeoStrap reinforcements.

Scope of Works

The major road upgrade includes:

• Construction of a new roundabout underpass connecting Pinga Street to the new Lumsden Point Access Road.
• Two 15-metre single-span bridge structures over the new roundabout interchange (providing four lanes).
• Four new access ramps on and off Great Northern Highway, with new turning pockets at Lumsden Point Access Road.
• A temporary side track to divert traffic during construction, completed in November 2024.

GeoStraps: A First for WA Infrastructure

This project is the first in WA to use Geoquest’s GeoStrap reinforcements in place of traditional steel reinforcements in MSE walls.

Why the change?
GeoStraps are made from coated polyester (PET), making them corrosion-resistant.  Their performance in harsh conditions ensures a longer design life and reduced maintenance over time.  The use of Geostraps on the GNH Pinga Street project enabled the contractor to re-use insitu embankment fill with a salt content that would’ve been rejected if the traditional steel soil reinforcement was applied. 

Key Advantages:

• Corrosion Resistant: Unlike steel, PET reinforcements do not rust, even in acidic or saline backfill.
• Lightweight and Safer to Install: Easier handling and installation reduce on-site risks and improve construction efficiency.
• Long-Term Cost Benefits: No need for galvanising or protective coatings.
• Engineered for Harsh Environments: A resilient choice for remote and corrosive settings

The use of GeoStraps reflects a broader industry shift towards innovative, sustainable materials that are better suited to Australia’s demanding infrastructure environments.

Expected Benefits

Once complete, the upgrade will:
• Improve traffic flow and reduce congestion at Pinga Street.
• Enhance acceleration and sight distances for safer travel.
• Enable safer access to Lumsden Point for all vehicles.
• Support the safe movement of OSOM (Over Size Over Mass) loads and accommodate future freight growth—enhancing safety and connectivity for the Wedgefield industrial area.

More About Lumsden Point

Pilbara Ports is progressing the development of a new multi-user facility and logistics hub at Lumsden Point in the Port of Port Hedland.

The Lumsden Point development will facilitate the export of battery metals such as lithium and copper concentrates, the import of renewable energy infrastructure including wind turbines and blades, as well as support the growth of direct shipping services to the Pilbara.