117.494—Schooner Bayou Canal.
The draw of the S82 bridge, mile 4.0 from White Lake at Little Prairie Ridge, shall open on signal; except that, from 10 p.m. to 6 a.m. the draw shall open on signal if at least four hours notice is given. The draw shall open on less than four hours notice for an emergency and shall open on signal should a temporary surge in waterway traffic occur.