Frontier Warriors

ShapeShift Technologies’ role

Frontier Warriors is a permanent public artwork co-created by artist Jamie Eastwood and Balarinji Studio, installed on the median near the Bernera Road exit of the Westlink M7 in Western Sydney. The work, its meaning and the history it honours are the artists’ and are described in their words above. ShapeShift Technologies manufactured the elements in ShapeShell™-RT: three warrior figures approximately four metres tall, with shields and spears.

The hardest site for a sculpture

A motorway median is a more demanding location than any building facade. The artwork is permanent, unreachable on foot, exposed on every side, and sits metres from traffic running at highway speed.

That brings in a stakeholder most public art never has to satisfy. Anything installed beside a live carriageway is assessed by the road authority as well as by the client, and mass, fixing design and behaviour on impact all form part of that assessment. Lightweight construction is an advantage in that conversation rather than merely a convenience, because the energy involved in any interaction with a vehicle is a function of weight.

Traffic also loads the work continuously. Vehicles passing at speed generate repeated pressure pulses on top of ordinary wind, and slender elements such as spears see that cycling for decades. Fatigue, not peak load, is the governing question for a shape like that.

You cannot close a motorway to install an artwork

Installation on an operating motorway happens inside night works windows under traffic management, which compresses everything. Elements have to be light enough to position quickly with minimal plant and precise enough that nothing needs adjusting in the dark.

The same logic governs the next thirty years. Every maintenance visit is another lane closure and another traffic management plan, so the practical requirement is not low maintenance but effectively none. A composite with no embedded steel to corrode and pigment moulded into the material rather than painted on is what makes that realistic in an environment coated in brake dust and road film.

Reflective finishes built into the surface

Each figure and shield carries reflective markings intended to read in headlights at night. That is a finish problem with a performance requirement attached: the reflectivity has to be integrated into the moulded surface, survive weathering and road grime, and keep working without cleaning. Applied treatments that depend on a clean surface do not last in that setting.

Four metre figures also have to be moulded as forms that are light, stiff and stable in their own right. At that height a hollow composite shell gains its strength from its geometry, which is what allows a large sculptural figure to be both substantial to look at and light to handle.

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