Results
Successful construction of the first stainless steel attenuator in Australia and New Zealand.
Enhanced long-term resilience of the Great Ocean Road against rockfall hazards.
Improved public safety and reduced maintenance requirements for debris management.
Delivery of a high-profile project under the Victorian Government’s resilience investment program.
Project
Solution
Installation of a 100m long attenuator with 5–7m posts on concrete plinths.
Use of high reach drills, rope access, and a 100t crane for construction.
Incorporation of a 50m tail to manage rockfall debris safely to roadside.
Supplementary stabilisation works including rock scaling, bolting, and mesh installation.
Project
Challenges
Construction on steep terrain approximately 50m above the road.
Requirement to safely handle large-scale system components, including tall posts and long spans.
Integration of works within a broader state-funded resilience program.
Project
Overview
As part of the $53 million Great Ocean Road Resilience Project, a 100m long stainless steel Geobrugg rockfall attenuator was installed above the roadway east of Cumberland River.
Positioned around 50m above the road, the system incorporated 5–7m high posts anchored on concrete plinths, with a 50m tail designed to direct debris to the roadside for safe clearance. The project was delivered using high-reach drills, rope access wagon drills, and a 100t crane, alongside additional slope stabilisation measures including scaling, rock bolts, and mesh.