Maintaining a large infrastructure network is rarely a question of whether something needs attention. There is always something to inspect, repair or monitor. The harder question is where to focus limited time, people and budgets. Structural Health Monitoring can help answer that question. By showing how a structure behaves between inspections, monitoring can give engineers more context when deciding which assets need a closer look, which interventions can wait, and where resources are best spent. This article looks at SHM from that practical perspective: not as a replacement for inspections or maintenance, but as another source of information for making better decisions about both.