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Description: This report is one of 96 technical papers presented at the 2006 Concrete Bridge Conference: HPC: Build Fast, Build to Last. All 96 papers are compiled on CD069. For more information, or to purchase CD069, click here.
Wapello County and the Iowa Department of Transportation were granted funding through the TEA-21 Innovative Bridge Construction Program, (IBRC) to construct the first highway bridge in the United States using ultra high performance concrete (UHPC). An optimized design using UHPC in the prestressed concrete beams for a bridge replacement project in Wapello County, Iowa was developed and plans prepared. The beams will be pretensioned using 0.6 inch diameter strands and without mild reinforcing steel, except to provide composite action with the cast-in-place deck. Associated research will include testing to verify shear and flexural capacities of a 70 ft long test beam along with shear testing of smaller beams.
Discussion of the design efforts and current progress of this research project are the focus of this presentation. Currently the 70 ft test beam and shear beams have been cast. Flexure and shear testing was successfully completed, and the current schedule is to cast the 110 ft beams for the bridge in June and July of 2005. Construction of the bridge is planned for later in the summer.
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