The draw of the Reclamation District No. 2027 bridge between Mandeville and Bacon Islands, mile 2.5 near Stockton, from May 15 through September 15, shall open on signal between the hours of 9 a.m. and 5 p.m., and it shall open upon 12 hours advance notice between the hours of 5 p.m. and 9 a.m.; and from September 16 through May 14 the draw shall open upon 12 hours advance notice between the hours of 9 a.m. and 5 p.m., and it shall open upon 24 hours advance notice between the hours of 5 p.m. and 9 a.m. Advance notice shall be given to the drawbridge operator by telephone at (209) 464-2959 or (209) 464-7928 weekdays between 8 a.m. and 5 p.m., and at (209) 993-8878 all other times.
33 C.F.R. §117.150