Howard Narrows - State Highway 63, Nelson
Client : Fulton Hogan and NZTA
Scope of works : Rockfall Mitigation Works
Back in May 2025 Ground Anchor Systems was contracted to Fulton Hogan to complete rock fall mitigation works at the Howard Narrows for NZTA.
The works consisted of scaling across 4 sites on the narrow stretch of road. The installation of 86 rock bolts was completed over 15 days of drilling, then a total of 650m2 of Tecco mesh was used to secure the face.
All the drilling was completed using a Crane Basket suspended off a 60ft crane. This allowed for high production and a safer approach compared a traditional A-frame drilling rig.
The onsite geology dictated that a layer of sacrificial Tecco mesh be installed prior to drilling. This then allowed for a top-down approach to stabilise the area with production rock bolts and mesh allowing the drilling crew to work safely below.
This project was successfully completed over a short time frame and in some very challenging weather conditions. The success is due to a strong collaborative approach between Ground Anchor Systems, Fulton Hogan, WSP NZ and NZTA.
Ground Engineering, Nelson–Tasman Region, Slope Stabilisation, Shotcrete, Rope-access, Residential Construction, Retaining Structures
Ground Engineering, Retaining Structures, Slope Stabilisation, Shotcrete, Residential Construction, Rope-access, Ground Retention, Bored Piles
Slope Stabilisation, Nelson–Tasman Region, Ground Engineering, Civil Infrastructure, Rockfall Mitigation
