~ Wall did not have coping at the top of the wall. Coping should always be required to prevent weathering at the top of the wall.
~ Long term maintenance questions, such as repairs for loss of facing blocks, remain. A positive soil-wall connection is preferred to mitigate loss of facing blocks.
~ GRS walls are typically founded on rock or weathered rock.
~ The Geotechnical Engineering Unit recommends the Bridge Management Unit construct a trial bridge with GRS abutments.
~ Concerns with using GRS walls for bridge abutments include scour potential at the base of the wall and access for superstructure inspections when the superstructure sits on the wall.
~ Guardrail details associated with the wall need to be developed.