CFR > Title 25 - Indians > CHAPTER I—BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR > SUBCHAPTER H—LAND AND WATER (parts 150 to 183) > PART 170—INDIAN RESERVATION ROADS PROGRAM > SUBPART D—Planning, Design, and Construction of Indian Reservation Roads Program Facilities (§170.400 to §170.507) > 170.506—What are the minimum qualifications for certified bridge inspectors?