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Notice of proposed rulemaking (NPRM).

The Moving Ahead for Progress in the 21st Century Act (MAP-21) required the Secretary to update the National Bridge Inspection Standards (NBIS). Through this NPRM, FHWA proposes to update the NBIS to address MAP-21 requirements, incorporate technological advancements including the use of unmanned aerial systems, and address ambiguities identified since the last update to the regulation in 2009. The FHWA also proposes to repeal two outdated regulations: The Highway Bridge Replacement and Rehabilitation Program and the Discretionary Bridge Candidate Rating Factor.

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