Consequences of Delayed Maintenance of Highway Assets (2017) / Chapter Skim
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Pages 59-66
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From page 59... ...
59 4.1 Research Contributions The major contribution of this research has been the development of procedures to quantify the consequences of delayed maintenance and support better-informed investment decisions for the preservation of highway assets. A three-step general framework describes the process developed in this study to quantify the consequences of delayed maintenance for the highway asset groups: Step 1.
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60 Consequences of Delayed Maintenance of Highway Assets 4.2 Quantifying the Consequences of Delayed Maintenance Comparing the outcomes of the agency-defined preservation policy with the outcomes of the delayed maintenance scenarios allows the agency to quantify the consequences of delayed maintenance. Performance models and analytical tools are used for this purpose.
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Research Contributions and Suggestions 61 • Do nothing. This scenario includes no maintenance activities over the entire period of analysis.
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62 Consequences of Delayed Maintenance of Highway Assets over the entire period of analysis. The duration of the time delay varies depending on the asset group, agency maintenance practices, and expected asset service life.
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Pavements Bridges Culverts Guardrails Lighting Pavement Markings Signs 1. All needs (baseline)
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64 Consequences of Delayed Maintenance of Highway Assets Asset Analysis Period Recommended Pavements 20 years or more Bridges 20 years or more Culverts 20 years or more Guardrails 10 to 20 years Lighting 5 to 10 years Pavement markings 5 to 10 years Signs 5 to 10 years Table 33. Length of analysis period recommended for asset groups based on service life.
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From page 65... ...
Research Contributions and Suggestions 65 4.4 Areas of Future Research The general framework presented in this report also can be used to quantify the consequences of delayed maintenance to other asset groups. Further investigation is suggested to apply the framework to the following asset groups: • Information technology system assets, • Traffic signals, • Overhead sign structures, • Barriers and impact attenuators, • Tunnels, • Slopes and embankments, • Retaining walls, • Noise walls, • Landscape features, • Cattle guards and fencing, • Curbs and gutters, • Sidewalks and bike paths, • Americans with Disabilities Act features, • Vehicles and equipment, • Weigh stations, • Pump houses, • Storage areas, • Maintenance depots, • Rest areas, and • Communication buildings.
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66 Consequences of Delayed Maintenance of Highway Assets Finally, a follow-up research effort could include an implementation phase to document the results of applying the framework developed in this study through a set of targeted case studies with selected state highway agencies. The case studies could provide practical examples of how the framework presented in this report can assist agencies in developing preservation policies, setting performance targets, determining current funding needs, and reporting the effects of delayed maintenance scenarios.
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