THE CHALLENGE Roadway reconstruction over marshland in Wisconsin. JOB OWNER Jefferson County Highway Department ENGINEER Jefferson County Highway Department DATE OF INSTALLATION September 2013 Wisconsin Highway 106 (STH-106) was reconstructed over a marsh area approximately 3 years prior, and almost immediately began experiencing differential settlement issues. Jefferson County Highway Department desired a rapid solution for reconstruction that would minimize the over excavation volume of the wet, organic soils and still provide a firm construction platform for the flexible pavement roadway. In addition, the construction platform would need to be robust enough to reduce differential settlement along the roadway route to maintain a roadway surface with acceptable rideability. PRO

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