The draw of the Plymouth County (Bridge Street) Bridge, mile 4.0, at Norwell, shall open on signal from May 1 through October 31 if at least four hours notice is given. From November 1 through April 30, the draw shall open on signal if at least 24 hours notice is given. [CGD01-97-126, 63 FR 18323, Apr. 15, 1998]