117.215—Niantic River.
(a)
The draw of the Amtrak bridge, mile 0.0 at Niantic, shall open on signal; except that, from April 1 through October 31 from 8 p.m. to 4 a.m. and from November 1 through March 31 from 6 p.m. to 6 a.m., the draw shall open on signal if at least one hour notice is given. When a train scheduled to cross the bridge without stopping has entered the drawbridge block, a delay in opening the draw may occur until the train has cleared the block.
(b)
The draw of the S156 Bridge, mile 0.1, at Niantic, shall open on signal; except that, from 7 a.m. to 8 a.m., and 4 p.m. to 5 p.m., Monday through Friday, except holidays, the draw shall open only for the passage of commercial vessels. From December 1 through March 31, from 8 p.m. to 4 a.m., the draw shall open on signal if at least six hours notice is given by calling the number posted at the bridge.