Section 117.439 - Company Canal(a) The draw of the LA1 bridge, mile 0.4 at Lockport, shall open on signal; except that, from 6 p.m. to 10 a.m. the draw shall open on signal if at least four hours notice is given. During the advance notice period, the draw shall open on less than four hours notice for an emergency and shall open on demand should a temporary surge in waterway traffic occur.(b) The draw of the S24 bridge, mile 8.1 at Bourg, 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. During the advance notice period, the draw shall open on less than four hours notice for an emergency and shall open on demand should a temporary surge in waterway traffic occur.CGD 08-84-12, 50 FR 23306, June 3, 1985. Redesignated and amended by CGD8-85-10, 50 FR 38001, Sept. 19, 1985; USCG-2011-0257, 76 FR 31837 , June 2, 2011. Redesignated by USCG-2014-1039, 80 FR 11550 , Mar. 4, 2015