Public Benefits of Highway System Preservation and Maintenance (2004) / Chapter Skim
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Pages 12-13
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From page 12... ...
PUBLIC BENEFITS OF HIGHWAY SYSTEM PRESERVATION AND MAINTENANCE SUMMARY Maintenance is work done to keep facilities and equipment in a state of repair or working efficiently. Many professionals responsible for highway management assert that this labor is regularly required to preserve facilities, even when they appear to be in good condition, and that its neglect can accelerate wear and aging, early onset of excessively rough pavements, corrosion on bridges, and other symptoms of unsatisfactory system performance.
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From page 13... ...
2 benefits are typically based on an empirical model relating pavement or bridge deterioration to age and cumulative usage, and principles of discounted cash flow analysis are used to compute the "life-cycle cost," the total net cost of providing highway service for a specified period of years that constitute a facility's service life. The empirical deterioration relationship, based on practical observation, has theoretical support, but researchers have not agreed on a single definitive model specification.
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