Vault.
36 C.F.R. § 910.70
in effectEffective: 2024-07-01A vault means an enclosure of space beneath the surface of the public space or sidewalk setback, except that the term vault shall not include public utility structures.
Source: eCFRURL: https://www.ecfr.gov/api/versioner/v1/full/2024-07-01/title-36.xmlFetched: 7/26/2026
