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12 be used by highway authorities to develop their own crite- tion of precast/prestressed concrete girders with longi- ria for acceptance or rejection. The information provided tudinal web cracking, and (5) recommended end zone in Appendices A and B also can provide the decision maker reinforcement detail. with a clear view of possible sources of longitudinal web Chapter 4 summarizes the significant conclusions of this cracking, available reinforcement details used to control project and suggestions for future research. longitudinal web cracking, and acceptance/rejection criteria used by other highway authorities. The following appendices are not published herein. To find Appendices A through G for this report, go to www.trb.org and search for "NCHRP Report 654". 1.6 Organization of the Report This report consists of four chapters and seven appendices, Appendix A provides a summary of the information col- as follows: lected from the literature review and national survey. Appendix B provides the national survey and its responses. Chapter 1 provides the problem statement, current knowl- Appendix C provides information on the full-scale girder edge of the problem, research objectives, and scope of the test regarding fabrication, testing, and analysis of test results. research, and applicability of results to highway engineering Appendix D provides information on the sealants that were practice. used in the durability testing. Chapter 2 summarizes the approach developed by the Appendix E provides the ASTM Specifications used in the research team to reach the objectives of the project. durability testing. Chapter 3 provides information on the project activities Appendix F provides information on the field inspection and findings, which include (1) a summary of results of of bridges in Nebraska and Virginia. the national survey, (2) full-scale testing of eight girders, Appendix G provides design examples of end zone rein- (3) a durability test, which included three phases, (4) a forcement using the LRFD Specifications and the proposed manual of procedures for the acceptance, repair, or rejec- details.