Innovative Bridge Upgrade Strengthens Gross Bridge for the Future

Published on 24 February 2026

Horsham Rural City Council has completed strengthening works on Gross Bridge, ensuring the nearly 60-year-old structure can safely carry modern heavy vehicles while extending its service life.

Originally built at a time when trucks were significantly lighter, the bridge required assessment to ensure it could meet today’s transport demands.

Rather than pursuing a costly full replacement, Council partnered with Western Sydney University to undertake detailed testing and engineering analysis. The results confirmed the bridge was performing safely, with only minor strengthening required.

Carbon fibre panels, which are lightweight and high-strength were applied to reinforce key sections of the steel structure — marking the first known use of this approach on a steel bridge of this type in Australia.

The works were completed in mid-February, and Gross Bridge now provides unrestricted access for B-doubles.

Mayor Cr Klowss said the project highlights Council’s commitment to practical and forward-thinking infrastructure solutions.

“This project demonstrates how smart engineering and innovative technology can strengthen our infrastructure, protect our community, and extend the life of important assets without the need for costly full replacement.

“We are committed to maintaining our ageing infrastructure responsibly and investing in solutions that keep our region strong and well connected.”

Council thanked its infrastructure team and research partners for delivering the innovative and cost-effective outcome.