 The present course of MD 413 was built from Crisfield to Marion Station in the late 1930s and early 1940s; MD 667 was assigned to the old segments of the highway.When modern MD 413 was completed from Marion Station to Westover in 1950, MD 667 was extended from Marion Station east and north to Westover along the old road.MD 406 started as a short segment of modern highway east from Hudson Corner in the late 1920s.