The project involved the design and build of 3 retaining walls to remediate slips, and increase the road width, Hiway Geotechnical’s design involved installation of micro piles, construction of a reinforced concrete footing. Once the footing was completed, soil nails and rock fall netting were placed in the embankment.
A GSC wall was then constructed, this was finished with a masonry block facing. Construction works were undertaken under Level 1 Stop / Go traffic control, as the road was too narrow to enable a single lane of traffic with construction machinery.
Hiway GeoStabilization was the main contractor for this project, which involved the installation of over 860m of soil nails and 90m3 of shotcrete, all using rope access techniques.