(a) The draws of the SR 46 (St. Claude Avenue) bridge, mile 0.5 (GIWW mile 6.2 East of Harvey Lock), the SR 39 (Judge Seeber/Claiborne Avenue) bridge, mile 0.9 (GIWW mile 6.7 East of Harvey Lock), and the Florida Avenue bridge, mile 1.7 (GIWW mile 7.5 East of Harvey Lock), shall open on signal; except that, from 6:30 a.m. to 8:30 a.m. and from 3:30 p.m. to 5:45 p.m., Monday through Friday, except federal holidays, the draws need not open for the passage of vessels. The draws shall open at any time for a vessel in distress.

(b) The US 90 (Danzinger) Bridge, mile 3.1, shall open on signal if at least two hours notice is given; except that the draw need not be opened from 7 a.m. to 8:30 a.m. and 5 p.m. to 6:30 p.m. Monday through Friday.

(c) The draw of the Senator Ted Hickey (Leon C. Simon Blvd./Seabrook) Bridge, mile 4.6, shall open on signal from 7 a.m. to 8 p.m.; except that the bridge need not open from 7 a.m. to 8:30 a.m. and 5 p.m. to 6:30 p.m. Monday through Friday. From 8 p.m. to 7 a.m., the draw shall open on signal if at least two hours notice is given.