33 CFR § 117.587 - Apponagansett River.
(a) The draw of the Padanaram Bridge, mile 1.0, shall open on signal from 1 May through 31 October, between 6 a.m. and 9 p.m., daily, as follows:
(1) The bridge shall open on signal, twice an hour, on the hour and half hour between 6 a.m. and 9 a.m. and between 8 p.m. and 9 p.m.
(2) The bridge shall open on signal, once an hour, on the hour between 9 a.m. and 8 p.m.
(b) At all other times the bridge shall open if at least four (4) hours advance notice is given.
(d) 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.