33 CFR 117.5 : Navigation And Navigable Waters (§ 1.01-1 To Parts 404-499) — (§ 1.01-1 To Parts 121-124) — Coast Guard, Department Of Homeland Security (§ 1.01-1 To Parts 121-124) — Bridges (§ 114.01 To § 118.160) — Drawbridge Operation Regulations (§ 117.1 To § 117.1107) — General Requirements (§ 117.1 To § 117.49) — When the drawbridge must open.

4 Aug 2016

Except as otherwise authorized or required by this part, drawbridges must open promptly and fully for the passage of vessels when a request or signal to open is given in accordance with this subpart.

33 CFR 117.5
[USCG-2001-10881, 71 FR 70308, Dec. 4, 2006]