Starting in 1956 , MD 139 was expanded to a four - lane divided highway from MD 134 to the modern intersection with Towsontown Boulevard .
Starting in 1956 , MD 139 was relocated as a four - lane divided highway from there to the Beltway interchange .
Starting in 1956 , MD 139 was expanded to a four - lane divided highway from MD 134 to the modern intersection with Towsontown Boulevard and relocated as a four - lane divided highway from there to the Beltway interchange .