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WisDOT contacted MwRSF and requested information regarding the use of soil fill behind temporary concrete barrier to reduce deflection.

Attached is the Florida DOT standards for the F-shape barrier. They have a specification in their plans for backfill behind the TCB system. We have review this for Florida in the past and gave it the seal of approval.

In addition, TTI presented information on this topic at the 2010 TRB meeting. The paper was entitiled, "Application of a Precast Concrete Barrier Adjacent to A Steep Roadside Slope", and the author was Nauman M. Sheikh. We can get you a copy if you need it.