Abstract:
**If we need/want to fill slots. I'd be happy to present this project**
In July the road at the top of a 150 foot tall bluff started showing signs of movement and failed in January of the next year. The failure progressed about 18 feet into road and about 25 feet down the slope. The natural slope at the toe of the failure is about 65 feet long at a 55° angle to horizontal and then terminates at the 60 foot vertical limestone cliff. The debris from the failure nearly impacted a business at the base of the cliff.
To stabilize the system a 28 foot-tall permanent soil nail wall was constructed removing some of the failed material to create a flat working surface fifteen feet wide. At this bench hollowbar micropiles were installed to support a structural slab. The soil nails and micropiles were installed from the roadway using a long reach excavator.  On the structural slab a geosynthetic confined soil (GCS) wall was used to rebuild the roadway.
Adjacent to and below the wall the slope was stabilized with soil nails (pins) and high tensile mesh to prevent further deterioration of the slope. This work was installed by suspending drill rigs and workers on rappelling lines.