 MD <unk> was the designation for an unnamed 0 @.@ 15 @-@ mile ( 0 @.@ 24 km ) segment of old alignment of MD 704 at its junction with MD 450 . The designation was assigned in 2000 when MD 704 and MD 450 were relocated . The MD <unk> designation and the road itself were removed in 2004 ; the Vista Gardens shopping center now sits on the highway 's general location . 
