United States Department of Transportation
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Abstract:This project started as a pilot in 2012. Bundled bridge projects are confined to one district, preference to one county, within a 15-mile radius. All bridges must be in poor condition and locally owned, with preference given to structures that are posted or closed. PennDOT targeted single-span bridges between 20 feet and 60 feet in length with skews less than 15 degrees. To maximize efficiency in design and construction, only bridges with very similar details are chosen. The goal is to have one design for all structures in the bundle and to replace multiple bridges of varying length with one bridge of a standard length. Lengthening a structure in this case is appropriate, as well as eliminating skew. If there are more than three designs per bundle, the bundle may not generate the level of savings desired to make the program viable (refer to the flow chart on side 2, which shows the selection process). Bridge bundles can be as large as desired, but individual contracts should be developed in groups of 7–10 structures to optimize construction crews.
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[PDF-606.78 KB]
