33 CFR 401.51
§ 401.51 Signaling approach to a bridge.
United States · 33 CFR — Navigation and Navigable Waters · Status: effective
Cite this
- Citation
- 33 CFR 401.51, § 401.51 Signaling approach to a bridge, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/154195
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Full text
(a) Unless a vessel's approach has been recognized by a flashing signal, the master shall signal the vessel's presence to the bridge operator by VHF radio when it comes abreast of any of the bridge whistle signs.
(b) The signs referred to in paragraph (a) of this section are placed at distances varying between 550 m and 2990 m upstream and downstream from moveable bridges at sites other than lock sites.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.