Regulations last checked for updates: Nov 22, 2024

Title 23 - Highways last revised: Jan 01, 1900
All TitlesTitle 23Chapter IPart 646Subpart BAppendix Appendix to - Appendix to Subpart B of Part 646—Horizontal and Vertical Clearance Provisions for Overpass and Underpass Structures
Collapse to view onlyAppendix Appendix to - Appendix to Subpart B of Part 646—Horizontal and Vertical Clearance Provisions for Overpass and Underpass Structures
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authority: 23 U.S.C. 109(e), 120(c), 130, 133(d)(1), and 315; 49 CFR 1.48(b)
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