The draw of the Boot Key Harbor drawbridge, mile 0.13, between Marathon and Boot Key, will open as necessary on the hour between the hours of 7 a.m. to 7 p.m. At all other times, the bridge will open following a one hour notification to the bridge tender by calling the posted cell phone number. The draw shall open on demand and as soon as practicable for the passage of tugs with tows, public vessels of the United States and vessels whereby a delay would endanger life or property. [CGD07-05-063, 71 FR 14806, Mar. 24, 2006]