The draw of the Maine Department of Transportation highway bridge, mile 4.6 between Hodgdon and Barters Island at Boothbay, shall open on signal from June 1 through October 31; except that, from 5 p.m. to 8 a.m., the draw shall be opened on signal if notice was given to the drawtender from 8 a.m. to 5 p.m. From November 1 through May 31 the draw shall open on signal if at least 24 hours notice is given to the drawtender or to the Maine Department of Transportation at Augusta.