[Code of Federal Regulations] [Title 23, Volume 1] [Revised as of April 1, 2001] From the U.S. Government Printing Office via GPO Access [CITE: 23CFR635.301] [Page 185] TITLE 23--HIGHWAYS CHAPTER I--FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PART 635--CONSTRUCTION AND MAINTENANCE--Table of Contents Subpart C--Physical Construction Authorization Sec. 635.301 Purpose. Source: 40 FR 17251, Apr. 18, 1975, unless otherwise noted. To prescribe the policies and procedures under which a State highway agency may be authorized to advance a Federal-aid highway project to the physical construction stage.