The long-term maintenance of infrastructure is a core task of the owner. The funds available for maintaining infrastructure are in fierce competition with a large number of claims. This comes in the context of continuously expanding infrastructure networks with accordingly high maintenance requirements. In this situation, it is important that the responsible authorities determine the funds needed for maintaining the infrastructure networks and demonstrate it to the political decision-makers in a transparent and comprehensible manner. They also need to be able to point out the consequences of a lack of funds. Hitherto, there was no uniform approach to addressing this issue.