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Network-Level Pavement Asset Management System Integrated with Life-Cycle Analysis and Life-Cycle Optimization

CSS Publication Number
Full Publication Date
March 2013

The authors have developed a new network-level pavement asset management system (PAMS) utilizing life cycle analysis and life cycle optimization methods. Integrated life cycle assessment and cost analysis expand the scope of the conventional network-level PAMS from raw material extraction to end-of-life management. To aid the decision-making process, the authors applied a life-cycle optimization model to determine the near-optimal preservation strategy for a pavement network. The authors utilized a geographic information system (GIS) model to enhance the network-level PAMS by collecting, managing, and visualizing pavement information data. The network-level pavement asset management system proposed in this paper allows decision makers to preserve a healthy pavement network and minimize life-cycle energy consumption, greenhouse gas (GHG) emissions, or cost as a single objective, and also meet budget constraints and other agency constraints within an analysis period. A case study of a pavement network in Michigan compares the near-optimal preservation strategy to the Michigan DOT's current preservation practice. Compared with the current preservation plan, the optimal preservation strategy reduces life-cycle energy consumption, GHG emissions, and cost by 20, 24, and 10%, respectively. The authors also analyzed the impact of annual preservation budget cuts on total life-cycle cost.  A US$3 million annual preservation budget reduction (75% reduction of current annual budget) will significantly increase user cost (caused by congestion and pavement surface deterioration) by US$450 million for a 40-year analysis period.

Research Areas
Urban Systems and Built Environment
Life cycle assessment, Life cycle cost analysis, Optimization, Pavement asset management
Publication Type
Journal Article
Digital Object Identifier
Full Citation
Zhang, Han, Gregory A. Keoleian and Michael D. Lepech. (2013) “Network-Level Pavement Asset Management System Integrated with Life-Cycle Analysis and Life-Cycle Optimization.” Journal of Infrastructure Systems. 19(1): 99-107.