Durability of Precast Segmental Bridges Final Report (1998) / Chapter Skim
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A comprehensive literature search, a nationwide survey in the United States, and personal contacts indicated there have been significantly more reported problems with precast segmental bridges, and post-tensioned bridges in general, in the United Kingdom than in the United States. The corrosion-induced collapse of two precast segmental structures in addition to reported problems with grouted post-tensioning led to a moratorium on grouted post-tensioned construction in the United Kingdom.
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Since both research and experience indicate that durability problems are due to poor design choices and construction execution, rather than intrinsic problems with precast segmental construction, it is highly probable that properly designed and constructed precast segmental bridges are durable. In order to ensure good future performance of precast segmental construction in the United States, AASHTO should adopt the AASHTO Guide Specifications on the design and construction of precast segmental bridges as fully enforceable specifications.
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