ABSTRACT
Ageing and neglected maintenance are the main reasons for an inadequate condition of waterway infrastructure in Germany. Available maintenance resources are limited, which is why prioritising maintenance measures is becoming increasingly important. In this paper, three different approaches to the maintenance prioritisation based on the Multi-Criteria Decision Analysis are presented for different constellations of infrastructure. First, the risk of neglecting the maintenance of ship locks is assessed with the help of the Multi-Attribute Utility Theory. Then, a concept based on the Simple Multi-Attribute Rating Technique is developed for the risk-based maintenance planning of a system of culverts. Lastly, an approach to vulnerability assessment of a levee system based on the Weighted Influence Non-linear Gauge System is formulated to derive weights for vulnerability indicators that also consider their interdependencies and permit the aggregation of the related information. The results show that the Multi-Criteria Decision Analysis supports the strategic prioritization of maintenance actions for waterways infrastructure and any infrastructure system with similar characteristics.
