Moore Construction was engaged by the Marlborough Road Recovery Team (MRRT) to deliver retaining wall construction and drainage upgrades in Okiwi Bay. Works included earthworks to establish a level platform, installation of 600mm diameter bored piles to 10m depth, placement of 250UC75 H piles, and installation of 150mm diameter ground anchors ranging from 12m to 17m, including grouting and testing. Timber lagging was fitted between H piles with appropriate durability detailing. Backfilling was carried out using compacted AP65 aggregate wrapped in geotextile, along with the installation of a 170mm Megaflo subsoil drainage system. A new DN500 HDPE SN8 culvert was installed, including Hynds wing walls and Reno mattress outlet protection. Traffic management was maintained under a site-specific TMP implemented by certified in-house STMS personnel. Final works included kerb and channel construction, full pavement reconstruction with AP65 sub-base, AP40 base course, two-coat chip seal surfacing, line marking, and installation of a timber sight rail.
