National Bridge Inspection Standards (NBIS)

The National Bridge Inspection Standards (NBIS) are regulations in the United States that set the guidelines for inspecting and maintaining bridges. Managed by the Federal Highway Administration, these standards ensure that bridges are regularly checked for safety, structural integrity, and potential hazards. Inspections typically occur every two years and involve detailed assessments of the bridge’s components, such as cables, supports, and decks. The goal is to identify problems early, prioritize repairs, and prevent accidents, thereby protecting public safety and ensuring the longevity of transportation infrastructure.