23 C.F.R. § 620.104 Standards.
Title 23 - Highways
A finding of public interest by FHWA will be based on compliance with airway-highway clearances which conform to FAA standards for aeronautical safety.
Title 23: Highways
PART 620—ENGINEERING
Subpart A—Highway Improvements in the Vicinity of Airports
§ 620.104 Standards.