 There are six signed mainline segments of MD 765 comprising the old alignment of the concurrency of MD 2 and MD 4 (hereafter referenced as MD 2-4) through Solomons, Lusby, St. Leonard, and Port Republic, and the county seat of Prince Frederick in southern Calvert County.There are also 20 unsigned sections of MD 765 south of Prince Frederick and along MD 2 between its junction with MD 4 in Sunderland and Owings in northern Calvert County.The portions of MD 765 that form the old alignment of Solomons Island Road were part of the original state road constructed as in the early 1910s, which ran the length of Calvert County from Solomons to Owings and continued north toward Annapolis.