CFR›Title 23›Chapter I›Part 625 ContainsSections 625.1–625.4CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 PART 625—DESIGN STANDARDS FOR HIGHWAYS Sections 625.1 § 625.1 Purpose. 625.2 § 625.2 Policy. 625.3 § 625.3 Application. 625.4 § 625.4 Standards, policies, and standard specifications. Authority23 U.S.C. 103, 109, 315, and 402; Sec. 1073 of Pub. L. 102-240, 105 Stat. 1914, 2012; Sec. 1404 of Pub. L. 114-94, 129 Stat. 1312; 49 CFR 1.85.Source62 FR 15397, Apr. 1, 1997, unless otherwise noted. Previous 624 Part 624—Interstate System Access Next 626 Part 626—Pavement Policy