33 C.F.R. § 117.635 Keweenaw Waterway.
Title 33 - Navigation and Navigable Waters
The draw of the US41 bridge, mile 16.0 between Houghton and Hancock, shall open on signal; except that, from January 1 through March 15, the draws shall open on signal if at least 24 hours notice is given.
Title 33: Navigation and Navigable Waters
PART 117—DRAWBRIDGE OPERATION REGULATIONS
Subpart B—Specific Requirements
Michigan
§ 117.635 Keweenaw Waterway.

