49 C.F.R. § 192.185
Vaults: Accessibility.
Cite as 49 C.F.R. § 192.185 (2026)
Each vault must be located in an accessible location and, so far as practical, away from: (a) Street intersections or points where traffic is heavy or dense; (b) Points of minimum elevation, catch basins, or places where the access cover will be in the course of surface waters; and (c) Water, electric, steam, or other facilities.