CFR > Title 23 - Highways > CHAPTER I—FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION > SUBCHAPTER G—ENGINEERING AND TRAFFIC OPERATIONS (parts 620 to 669) > PART 650—BRIDGES, STRUCTURES, AND HYDRAULICS > SUBPART G—Discretionary Bridge Candidate Rating Factor (§650.701 to §650.709) > 650.701—Purpose.