33 CFR § 117.600 - Lagoon Pond.
The draw of the Lagoon Pond Bridge, mile 0.0 in Tisbury, Massachusetts, shall operate as follows:
(a) The draw shall open on signal from May 15 through September 15, from 8:15 a.m. to 8:45 a.m., from 10:15 a.m. to 11 a.m., from 3:15 p.m. to 4 p.m., from 5 p.m. to 5:45 p.m., and from 7:30 p.m. to 8 p.m. At all other times the draw will open for the passage of vessels if at least four (4) hours advance notice is given by calling the number posted at the bridge.
(b) The draw shall open on signal from September 16 through May 14 if at least a twenty-four (24) hours advance notice is given by calling the number posted at the bridge.
(c) The owners of this bridge shall provide and keep in good legible condition, clearance gauges for each draw with figures not less than twelve (12) inches high designed, installed and maintained according to the provisions of section 118.160 of this chapter.