117.565—Miles River.
The draw of the Route S370 bridge, mile 10.0 at Easton, Maryland, shall open on signal; except that from November 1 through March 31, 24 hours a day, and from April 1 through October 31, from 6 p.m. to 6 a.m., a six-hour advance notice to the drawtender is required for bridge openings.