Abstract: Methods and apparatus inspecting, maintaining, repairing, and replacing infrastructure assets, including any and all physical apparatus, devices, and objects therein, rely on both internal data analyzed for components as assets, but also scoring them for actual condition, by incorporating analyses of maintenance and repair data on operations improving lifetimes. Prediction modeling of lifetimes remaining originates from analysis of data originating from manufacturer testing, expert systems, similitude with external components and systems, which may be compared to lifetimes analyzed for actual assets in order to do servicing from inspection, maintenance, and repair, through replacement.