County roads require a lot of coordination to stay in good shape. In addition to staff time, investments must be made to keep certain higher dollar projects moving forward. For instance, an older, undersized culvert might have two or three elements that are difficult or impossible to maintain. It will be required to be replaced, which will mean that the road will have to be dug up and the culvert replaced. A slide may continue to move and a major rebuild including structural stability elements must be designed and constructed. Bridges age and require work to stay safe for the traveling public.