NBISPublic Domain
National Bridge Inspection Standards
Federal Highway Administration|23 CFR 650 Subpart C (2022 Final Rule)
The National Bridge Inspection Standards (NBIS) are federal regulations (23 CFR 650 Subpart C) that establish requirements for the inspection of all highway bridges on public roads. FHWA published a major update in May 2022 adding risk-based inspection intervals, element-level inspection, load rating, and quality assurance/quality control requirements. The standards ensure the safety of the nation's roughly 620,000 highway bridges.
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Public Domain: This standard is a U.S. government publication and is not subject to copyright. Section text is provided for reference and search purposes.