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Abstract:In 1997, a Portland Cement Concrete (PCC) Thin Bonded Overlay (TBO) using a one and one-half inch thickness was placed on two bridges, I-10 at the Bonne Carre Spillway and US 90 at Bayou Des Allemands, under the Applied Research & Technology Program of the Intermodal Surface Transportation Efficiency Act (ISTEA), section 6005(e)(7). Section 6005 provides funding for the overlay of deteriorating roadways and/or bridge decks utilizing a thin bonded overlay.
The two sections of bridge decks that the Department of Transportation and Development (DOTD) overlaid are five spans in the east bound lane of I-10 over the Bonne Carre Spillway and eight spans in the east bound lane of US 90 over Bayou Des Allemands, both in St. Charles Parish. These two sites will be used to evaluate the feasibility of and costs and benefits associated with the repair, rehabilitation, and upgrading of highways and bridges with respect to TBOs and surface laminates. This report documents construction activities.
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