Allocation of bridge maintenance costs based on prioritizationindexes

• Autores: Tomás Echaveguren, Peter Dechent
• Localización: Revista de la Construcción, ISSN-e 0718-915X, ISSN 0717-7925, Vol. 18, Nº. 3, 2019, págs. 568-578
• Idioma: español
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• Resumen

  • Prioritizationindexes (PI) are a need-based bridge maintenance approach, which allowsmaking short-term maintenance decisions. They generally use just the bridge condition as an explanatory variable, therefore, prioritizing is easy to do. When these indexes are multidimensional, prioritization depends not just on the bridge conditions, butalso on variables such as vulnerability and theirstrategic importance. This paper discusses a simple and direct procedure to allocate bridge maintenance costs by using a PI based on the bridge condition, theirstrategic importance and vulnerability. The procedure combines maintenance activities within the strategies of routine and preventive maintenance, repair, reinforcement, reconstructionor replacement. It includes the calculation of maintenance costs bymaintenance activityand strategy, in order to integrate them in a cost matrix. The procedure is applied to a 24-m long bridge, whose infrastructure is made of concrete, steel beams and concrete deck. Unit costs of 60 maintenance activities were calculated, and a sensitivity analysis was carried out toestablish the cost by linear meter in relation to PI explanatory variables.The cost wassensitivetobridge condition, theirvulnerability,and relevance withinthe road network.