What is the primary purpose of the National Bridge Inspection Standards (NBIS)?

• A. To require regular inspection, documentation, and safety actions for highway bridges to protect public safety.
• B. To establish universal design standards for new bridges.
• C. To monitor traffic volumes on all bridges.
• D. To regulate construction financing for bridge projects.

Answer: (A)

NBIS is about safeguarding the public by ensuring bridges are looked at regularly and acted upon when issues are found. Its primary purpose is to require regular inspections of highway bridges, document what is found, and trigger appropriate safety actions or maintenance to address identified conditions. This standardizes how inspections are conducted across states, so problems are detected early and repairs or load restrictions can be put in place before a failure occurs. It isn’t about designing new bridges, monitoring traffic volumes, or regulating financing—those are outside NBIS’s scope.