117.537—Townsend Gut.
The draw of the Southport (SR27) Bridge, at mile 0.7, across Townsend Gut between Boothbay Harbor and Southport, Maine shall open on signal; except that, from April 29 through September 30, between 6 a.m. and 6 p.m., the draw shall open on signal on the hour and half hour only, after an opening request is given.