Proposed AASHTO Guides for Bridge Preservation Actions (2020) / Chapter Skim
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Pages 28-37
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28 The research team produced a guide to bridge preservation (Bridge Guide) and a guide to bridge deck preservation (Deck Guide)
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Guides to Preservation 29 Chapter 2 Bridge Preservation Chapter 2 presents the concept of bridge preservation and applies the concept to identify candidate bridges and admissible actions. Chapter 2 defines terms in bridge preservation.
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30 Proposed AASHTO Guides for Bridge Preservation Actions 2.9 Glossary of Terms in Bridge Preservation Terms in bridge preservation are defined in Appendix D: Glossary of Terms in Bridge Preservation. Chapter 3 Actions in Bridge Preservation Chapter 3 presents actions for the preservation of bridges.
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Guides to Preservation 31 4.2 Cost-Effective Preservation Actions Bridge preservation is cost-effective if preservation reduces agency costs for bridge service. Agency costs for bridge service are the costs of preservation actions at bridges plus the costs of eventual replacement of bridges.
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32 Proposed AASHTO Guides for Bridge Preservation Actions 5.2 Bridge Preservation Population The bridges that meet a bridge owner's criteria for preservation candidates are identified. This is the preservation population.
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Guides to Preservation 33 Appendix C: Examples of Cost Evaluation of Bridge Preservation A method for PCCA is introduced. Preservation plans are developed for two bridges.
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34 Proposed AASHTO Guides for Bridge Preservation Actions 1.6 Bridge Decks Addressed in the Guide Most of the information in the Guide is for steel-reinforced concrete decks. It does have some information on steel grid decks and timber decks.
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Guides to Preservation 35 3.2 Data on the Condition of Bridge Decks Data on the condition of bridge decks include performance measures, NBI condition ratings, element-level condition states, and element-level defects. Data on condition contribute to evaluations of bridge decks and to decisions on preservation treatments for decks.
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36 Proposed AASHTO Guides for Bridge Preservation Actions 4.3 Selection of Treatment Data on condition of bridges indicate the types, severities, and extent of deterioration. All are important in selecting preservation treatments.
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Guides to Preservation 37 right away to avert worsening condition. W/repair and other w/ notations indicate that additional work is needed before protective treatment.
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