Poster 17-28b

Coactive Prioritization Strategy and Novel Game Theory Model for Long-term Bridge Asset management

PI: Mi Geum Chorzepa

Co-PI(s): Brian Oyegbile and Stephan Durham

Institution(s): The University of Georgia

Abstract

Most in-service bridges in the United States are constructed between the 1950s and 1970s, with an average lifespan ranging from 50 to 100 years. Consequently, an increasing number of these bridges are in need of maintenance, rehabilitation, and replacement (MRR). Adversely, the MRR budget is constrained. Therefore, bridge owners are faced with a difficult task of balancing the condition of their bridges with the cost of maintaining them. To optimize return on investments (ROIs), a strategic move is proposed in this study as a purposeful step taken by transportation agencies in order to increase ROIs on bridge MRRs. This strategic move is implemented in a game theory framework. In computing a time-dependent bridge performance relationship, this study employs a Co-Active mechanism, which was developed in the previous study. An integrated approach utilizing the coactive prioritization and game theory model is used to compute the payoffs for the states of Georgia, Virginia, Pennsylvania and New York.

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