Case Study: Public Works Yard Slope Improvements

Client: City of Bainbridge Island Department of Public Works Location: Bainbridge Island, WA Contact for geotechnical projects: John Peterson

Project Background & Challenges

During heavy winter rains, an over-steepened embankment failed, likely because it consisted of suspect compacted earth and construction debris. Before the site could be redeveloped, a stable slope would be needed to maintain road access and below-grade infrastructure for the City of Bainbridge Island’s new public works yard.

Solution

After preliminary exploration, Aspect designed a support wall that would allow maximum use of the site. During the review process, we worked with City engineers to revise plans and develop specifications that addressed the restrictions associated with this property. During construction, we maintained flexibility to modify the design in response to complex site conditions. The ultimate solution combined a gravity block wall and rock fill — an economical design that preserved the functionality of the facility.