Regulations last checked for updates: Feb 11, 2026

Title 43 - Public Lands: Interior last revised: Dec 18, 2025
All TitlesTitle 43Chapter IPart 423Subpart B - Subpart B—Areas Open and Closed to Public Use
View all text of Subpart B [§ 423.10 - § 423.18]
§ 423.18 - Use of closures.

Closures are to be used only where all public access is to be prohibited. Special use areas are to be used to restrict specific activities as set forth in subpart E of this part 423.

authority: 43 U.S.C. 373a and 373b
source: 73 FR 75349, Dec. 11, 2008, unless otherwise noted.
cite as: 43 CFR 423.18
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