Picture Gallery - Remediation of Roadway Failure
Part I


This picture gallery shows a failed berm adjacent to a busy roadway and step-by-step reconstruction of the berm. D'Appolonia evaluated the failure, determined the cause, prepared a remedial design and performed field monitoring of the reconstruction.

Click on pictures to enlarge.



Photograph 1

Sidewalk and roadway disrupted by a landslide above a walking trail and stream on a steep hillside in a city park.





Photograph 2

Closeup view of displacement of concrete sidewalk over landslide scarp.





Photograph 3

Slide area following removal of sidewalk portion of roadway and slide mass and subsequent placement of geotextile fabric in preparation for reinforced soil slope (RSS) construction.





Photograph 4

Overexcavation of colluvial soils for construction of RSS foundation aggregate key extending to bedrock.





Photograph 5

Completed key excavation in area of deeper colluvium.





Photograph 6

Key trench being backfilled with AASHTO No. 1 coarse aggregate.




Photograph 7

Placement of geogrid and aggregate fill for initial lift of RSS construction.





Photograph 8

Installation of underdrain along heel of RSS embankment.





Photograph 9

Placement of RSS aggregate and intial level of galvanized welded-wire mesh (WWM) facing panels.





Photograph 10

Installation of geotextile and organic soil in facing units to provide medium for vegetative growth on finished RSS face.





Photograph 11

Continuing installation of geogrid reinforcement, aggregate fill, and soil-filled facing units.





Photograph 12

Continuing installation of geogrid reinforcement, aggregate fill, and soil-filled facing units.





Photograph 13

Completed aggregate placement for second lift of RSS construction viewed from top.





Photograph 14

Completed aggregate placement for second lift of RSS construction viewed from side.




RETURN TO TOP OF PAGE


next