Optimal Network-Level Bridge Maintenance Planning Based on Minimum Expected Cost
- 1 January 2000
- journal article
- Published by SAGE Publications in Transportation Research Record: Journal of the Transportation Research Board
- Vol. 1696 (1), 26-33
- https://doi.org/10.3141/1696-39
Abstract
The goal of bridge management is to determine and implement the best possible strategy that ensures an adequate level of safety at the lowest possible life-cycle cost. Although this is generally recognized, the integration of life-cycle cost analysis with bridge reliability analysis has been very limited. Moreover, this has been formulated and illustrated only for individual bridges. A framework for optimal network-level bridge maintenance planning based on minimum expected cost is presented. The goal is the minimization of the expected maintenance cost of a bridge stock with maintenance of the lifetime reliability of each bridge above an acceptable (target) level. The approach is illustrated for a stock of realistic highway bridges. Individual bridges in this stock have different ages, and their reliabilities are time dependent. The framework offers a rational basis for optimizing the resource allocation for management of a stock of gradually deteriorating bridges based on balancing life-cycle maintenance cost and lifetime reliability. This has important practical implications in the development of the optimal management strategy for the bridge stock.Keywords
This publication has 9 references indexed in Scilit:
- Guest Editorial: Structural Reliability in Bridge EngineeringJournal of Bridge Engineering, 1998
- Optimal planning of retrofitting interventions on bridges in a highway networkEngineering Structures, 1998
- The Pontis Bridge Management SystemStructural Engineering International, 1998
- The BRIDGIT Bridge Management SystemStructural Engineering International, 1998
- New Developments in Bridge Management MethodologyStructural Engineering International, 1998
- Life-Cycle Cost Design of Deteriorating StructuresJournal of Structural Engineering, 1997
- Lifetime Bridge Maintenance Strategies Based on System ReliabilityStructural Engineering International, 1997
- Network-Level Bridge Life-Cycle Management SystemJournal of Infrastructure Systems, 1997
- Optimal strategy for inspection and repair of structural systemsCivil Engineering Systems, 1987