Written By: Samantha Justice, P.E. Dams and Spillways Are a Critical Part of U.S. Infrastructure With over 91,000 structures nationwide, dams and spillways are essential for controlling flooding, water distribution, and providing hydroelectric power. However, these structures cannot last forever. The average age of dams and spillways in the U.S. is now 61 years​​​, which is significantly over the typical 50-year lifespan of these structures. Aging infrastructure can lead to serious consequences if safety precautions are not taken or measures are not implemented to address identified problems promptly. Continual inspection and upkeep are crucial for any dam manager. The 2025 Infrastructure Report Card by the American Society of Civil Engineers upgraded the condition of U.S. dams from a “D” to a “D+”, reflecting modest improvements but still highlighting the critical need for ongoing repairs and maintenance. State and federal regulations provide a framework for assessing and maintaining dam and spillway structures, requiring at least yearly audit inspections to identify areas needing repair or replacement. Performing these repairs can help extend the lifetime of dams, maintaining essential services without excessive costs or increased failure potential. Understanding Areas of Concern for Existing Structures The vast majority of America’s rivers and lakes have… Read more »