33 C.F.R. § 117.41 Maintenance of draw in fully open position.
Title 33 - Navigation and Navigable Waters
The draw may be maintained in the fully open position to permit the passage of vessels and drawtender service discontinued if the District Commander is notified in advance. The draw shall remain in the fully open position until drawtender service is restored or authorization under §117.39 is given for the draw to remain closed and untended.
Title 33: Navigation and Navigable Waters
PART 117—DRAWBRIDGE OPERATION REGULATIONS
Subpart A—General Requirements
§ 117.41 Maintenance of draw in fully open position.