23 CFR § 470.115 - Approval authority.

---
identifier: "/us/cfr/t23/s470.115"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "23 CFR § 470.115 - Approval authority."
title_number: 23
title_name: "Highways"
section_number: "470.115"
section_name: "Approval authority."
chapter_name: "FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "E"
subchapter_name: "PLANNING AND RESEARCH"
part_number: "470"
part_name: "HIGHWAY SYSTEMS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "23 U.S.C. 103(b)(2), 103(c), 134, 135, and 315; and 49 CFR 1.85."
regulatory_source: "40 FR 42344, Sept. 12, 1975, unless otherwise noted. Redesignated at 41 FR 51396, Nov. 22, 1976."
cfr_part: "470"
---


# 470.115 Approval authority.

(a) The Federal Highway Administrator will approve Federal-aid highway system actions involving the designation, or revision, of routes on the Interstate System, including route numbers, future Interstate routes, and routes on the National Highway System.

(b) The Federal Highway Administrator will approve functional classification actions.