Bridge Engineering and Life Cycle Costby Neal H. Bettigole, Exodermic Bridge Deck Inst, Westwood, United States,
Abstract: The Intermodal Surface Transportation Efficiency Act of 1991 (ISTEA) requires that all Federal Aid projects must 'consider...the use of life-cycle costs in the design and engineering of bridges, tunnels, or pavement.' Critics of life cycle cost claim that there is insufficient data to support proper decision making. The flaw in their reasoning is that exact data and analysis is neither called for by ISTEA, nor necessary in making choices between design alternatives. The application of probability-based methodologies to specific bridges, materials, systems, and components offers the most likely path to formalizing life cycle cost analysis.
Subject Headings: Life cycles | Bridge design | Bridge components | Systems engineering | Construction costs | Pavement design | Probability
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