23 C.F.R. § 650.501
Purpose.
Cite as 23 C.F.R. § 650.501 (2026)
This subpart sets the national minimum standards for the proper safety inspection and evaluation of all highway tunnels in accordance with 23 U.S.C. 144(h) and the requirements for preparing and maintaining an inventory in accordance with 23 U.S.C. 144(b).
- Cross-references to the US Code
- 23:144