CFR›Title 49›Subtitle B›Chapter VI›Part 640 ContainsSection 640.1CorpusDaily eCFRDisplayed edition2026-04-27Last updated2026-04-27 PART 640—CREDIT ASSISTANCE FOR SURFACE TRANSPORTATION PROJECTS Sections 640.1 § 640.1 Cross-reference to credit assistance. AuthoritySecs. 1501 et seq., Pub. L. 105-178, 112 Stat. 107, 241, as amended; 23 U.S.C. 181-189 and 315; 49 CFR 1.51. Previous 633 Part 633—Project Management Oversight Next 650 Part 650—Private Investment Project Procedures