23 CFR Subpart A
Federal-aid Highway Systems
May 21, 2020
§
470.101
Purpose
§
470.103
Definitions
§
470.105
Urban area boundaries and highway functional classification
§
470.107
Federal-aid highway systems
§
470.109
System procedures—General
§
470.111
Interstate System procedures
§
470.113
National Highway System procedures
§
470.115
Approval authority
Appendix
A to Subpart A of Part 470
Guidance Criteria for Evaluating Requests for Interstate System Designations under 23 U.S.C. 103(c)(4)(A) and (B)
Appendix
B to Subpart A of Part 470
Designation of Segments of Section 332(a)(2) Corridors as Parts of the Interstate System
Appendix
C to Subpart A of Part 470
Policy for the Signing and Numbering of Future Interstate Corridors Designated by Section 332 of the NHS Designation Act of 1995 or Designated Under 23 U.S.C. 103(c)(4)(B)
Appendix
D to Subpart A of Part 470
Guidance Criteria for Evaluating Requests for Modifications to the National Highway System
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