Hiway GeoStabilization completed a design and construct project, based on site extents instructed by the Client, for a retaining wall in 2008. In early 2013 the road failed on both ends of the existing, but unretained, HGT wall. The repair project involved the design and construction of a soil nail retaining wall and a GCS® retaining wall, both approximately 1.0m high, with a requirement for the live carriageway to remain active throughout the project. These walls were 12m and 13m long each. Hiway GeoStabilization undertook load testing on the anchors as part of the project.
The main focus of this project was remedial repair of a failed timber post and panel retaining wall, with a secondary focus on retention of a slip adjacent to the failed wall.