 KY 70 ends at its eastern terminus at a junction with US 150 in the Rockcastle County community of Broadhead, just west of Mount Vernon.Kentucky Route 70 was one of the many charter routes when the Kentucky State Highway system was first started in the 1920s and 1930s.The low underpass under railroad tracks near Eubank just west of the US 27 junction has been closed and bypassed with a highway overpass just north of old route.