Recommended Guidelines for Prefabricated Bridge Elements and Systems Tolerances and Recommended Guidelines for Dynamic Effects for Bridge Systems

TRB's National Cooperative Highway Research Program (NCHRP) Web-Only Document 243: Recommended Guidelines for Prefabricated Bridge Elements and Systems Tolerances and Recommended Guidelines for Dynamic Effects for Bridge Systems documents the results of two studies that have produced guidelines to the American Association of State Highway and Transportation Officials (AASHTO) for adoption. The first study led to the development of guidelines for tolerances for Prefabricated Bridge Elements and Systems (PBES). The second study involved Dynamic Effects of Accelerated Bridge Construction (ABC) Bridge Systems. These include dynamic friction effects of lateral bridge slides and dynamic effects for Self Propelled Modular Transporters (SPMT) bridge moves. ABC has become commonplace throughout the United States. Projects have been completed by virtually every state, and many ABC technologies have been researched and developed. However, this project is the first to provide specifications or guidelines for tolerances of prefabricated bridge elements or dynamic effects for construction and placement of bridge systems.