33 C.F.R. § 117.43 Changes in draw operation requirements for regulatory purposes.
Title 33 - Navigation and Navigable Waters
In order to evaluate suggested changes to the drawbridge operation requirements, the District Commander may authorize temporary deviations from the regulations in this part for periods not to exceed 90 days. Notice of these deviations is disseminated in the Local Notices to Mariners and published in the [CGD–92–015b, 58 FR 46081, Sept. 1, 1993]
Title 33: Navigation and Navigable Waters
PART 117—DRAWBRIDGE OPERATION REGULATIONS
Subpart A—General Requirements
§ 117.43 Changes in draw operation requirements for regulatory purposes.

