Results
Cost-effective delivery with reduced scaffolding and road disruption
Full compliance with environmental protection measures
Long-term structural integrity and corrosion resilience restored
Enhanced operational life of all treated concrete components
Project
Solution
Rope access and staged netting systems were used to provide safe and efficient access to the underside of the bridge.
A custom-built high-pressure spraying rig with extended return lines allowed the entire bridge to be coated from a single location.
Blasting and corrosion protection works were carried out within fully contained zones to ensure environmental compliance.
The repair scope included patch repairs to delaminated, cracked, and spalled concrete, installation of sacrificial anodes, blast cleaning and coating of steel nuts and bolts, and application of a silane-based protective coating to all concrete surfaces above the waterline.
Project
Challenges
Accessing difficult-to-reach concrete elements beneath the bridge
Minimising disruption to public roads and traffic flow
Preventing environmental contamination in a sensitive estuarine zone
Project
Overview
Geovert was engaged through a competitive tender process to deliver concrete repairs and corrosion management for the Hutt River Estuary Bridge. The team proposed an alternative access methodology that reduced reliance on traditional scaffold, cut traffic management requirements, and delivered better value to the client. Rope access techniques combined with staged tensioned netting enabled safe and efficient access beneath the 170m long bridge structure. The system doubled as an effective containment setup to support environmental compliance throughout blasting and coating operations.
A high-pressure airless painting unit was used with extended return lines, allowing the crew to spray the entire span from a single location, with bunded containment positioned well away from the waterway to minimise environmental risk.