Project Overview
Moore Construction delivered critical infrastructure recovery and resilience works across multiple sites along French Pass Archers Road in Marlborough, as part of the region’s post-weather event recovery programme.
The project involved stabilisation of damaged roadway infrastructure, construction of retaining systems, and realignment works to ensure long-term safety, durability, and network resilience.
Scope of Works
Works were delivered across three key sites: DP301 retaining wall, and SR413 and SR432 road retreat zones.
- Anchored H-pile retaining wall construction
- Bulk and detailed earthworks
- Road retreat and slope stabilisation works
- Drainage and stormwater upgrades
- Pavement reconstruction and road marking
- Traffic management under live road conditions
Retaining & Structural Systems
The DP301 site featured a fully engineered anchored H-pile retaining wall, incorporating bored piles, ground anchors, timber lagging, and reinforced concrete elements.
Pile installation depths ranged from 4m to 10m, with ground anchors extending up to 13m, providing long-term stability for the roadway and surrounding embankment.
Construction Delivery
Works were delivered sequentially to maintain stability and safe access across constrained sites. Earthworks and excavation were carefully staged to reduce risk while maintaining programme efficiency.
Environmental Management
Works were undertaken within environmentally sensitive areas, requiring strict adherence to an Environmental Management Plan. Innovative approaches such as “cut and stack” vegetation clearance were used to allow native fauna to safely relocate prior to full removal.
Traffic & Stakeholder Management
Construction was carried out under full road closure conditions with controlled access windows, balancing productivity with public accessibility. All traffic management was delivered in-house by certified STMs.
