Mooney Mooney Creek Bridge
Precast Arches, Spandrel & Wing Walls
Key Challenge
Designing for 100-Year Durability Under Heavy Loading
The project required a solution that provided long-term durability, with a 100-year design life, while also minimising road closure times. The replacement structure also needed to withstand significant loading conditions, including 8.4 metres of fill at the apex, and adapt to steep embankments from the road to the creek.
Delivering the Solution
Twenty-Two Precast Arches Installed in Just Four Days
Humes supplied precast concrete arch units, along with spandrel and wing walls, to replace the CMP drain. The spandrel and wing walls were manufactured in non-standard sizes to accommodate the higher-than-average fill heights and the unusually steep angle of the embankment.
A large volume of fill was excavated to remove the existing drain. Twenty-two precast arch units were then lifted into place by crane and assembled within two days. The project was completed in just four days.
The precast concrete arch solution delivered a durable and efficient outcome, providing a 100-year design life while minimising disruption to traffic. The Mooney Mooney Creek Bridge project demonstrates the adaptability of Humes’ custom-designed arches to meet complex heavy loading requirements and deliver cost-effective tunnel solutions under demanding conditions.
