The draw of the CSX Transportation Railroad bridge, mile 15.0 at Hurricane, shall open on signal; except that, from 5 p.m. to 9 a.m., the draw shall open on signal if at least eight hours notice is given. During periods of severe storms or hurricanes, from the time the National Weather Service sounds an ``alert'' for the area until the ``all clear'' is sounded, the draw shall open on signal. [CGD8-85-09, 50 FR 37356, Sept. 13, 1985]