117.664—Rainy River, Rainy Lake and their tributaries.
The draw of the Canadian National Bridge, mile 85.0, at Rainer, shall open on signal; except that, from October 16 to April 30, the draw shall open on signal if at least 12-hours advance notice is provided. The commercial phone number to provide advance notice shall be posted on the bridge so that it is plainly visible to vessel operators approaching the up or downstream side of the bridge. The owners of the bridge shall maintain clearance gauges in accordance with 33 CFR 118.160 of this chapter.