C.F.R. » Title 23 » CHAPTER I—FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION › SUBCHAPTER G—ENGINEERING AND TRAFFIC OPERATIONS › PART 650—BRIDGES, STRUCTURES, AND HYDRAULICS › Subpart E—National Tunnel Inspection Standards

23 C.F.R. § 650.503

Applicability

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The National Tunnel Inspection Standards (NTIS) in this subpart apply to all structures defined as highway tunnels on all public roads, on and off Federal-aid highways, including tribally and federally owned tunnels.