The draw of the Grassy Sound Channel Bridge, mile 1.0 in Middle Township, shall open on signal from 6 a.m. to 8 p.m. from May 15 through September 30. From 9:15 a.m. to 2:30 p.m. on the fourth Sunday in March of every year, the draw need not open for vessels. If the fourth Sunday falls on a religious holiday, the draw need not open from 9:15 a.m. to 2:30 p.m. on the third Sunday of March of every year. Two hours advance notice is required for all other openings by calling (609) 368-4591.