What is the minimum frequency of inspection for in-service bridges according to federal guidelines?

The minimum frequency of inspection for in-service bridges according to federal guidelines is every two years. This standard is established to ensure the safety and longevity of bridges, allowing for timely detection and assessment of potential maintenance needs or structural concerns. Frequent inspections help identify wear and tear, deterioration, or any changes in the condition of the bridge that may not be immediately visible to the casual observer. By following the two-year inspection cycle, states can effectively manage and maintain their bridge infrastructure, helping to ensure public safety while optimizing maintenance budgets and resources. This interval strikes a balance between thoroughness in monitoring and practical application of resources available for bridge management.