Problem Fort Myers, Florida, experienced recurring pavement settlement problems. Because of Florida’s high water table and sandy soils, for many years the Florida Department of Transportation (FDOT) wrote off pavement settlement as a fact of life in southern Florida. However, upon closer examination, FDOT determined much of the settlement occurred near the catch basins built along the edges of the roads. FDOT realized the asphalt patches they used to repair settled pavement were only short-term solutions; the real problem was below the street with the storm water infrastructure. Analysis The catch basins in question were connected to the main storm sewer lines and cross drains (which carried water across the street from other catch basins). The soils surrounding the cross drains event

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