Design Standards for Highways

This final rule updates the regulations governing design standards and standard specifications that apply to new construction, reconstruction, resurfacing (except for maintenance resurfacing), restoration, and rehabilitation projects on the National Highway System (NHS). In issuing this final rule, FHWA incorporates by reference the latest versions of design standards and standard specifications previously adopted and incorporated by reference, and removes the corresponding outdated or superseded versions of these standards and specifications. Use of the updated standards is required for all NHS projects authorized to proceed with design activities on or after the effective date of the final rule.