during this time period the then ministry of works designated a substantial amount of land for future upgrade works along sh1, with a view that by the late 1990s much of it would be rebuilt as motorway, possibly along the lines of a us interstate, with bypasses of all small towns, grade separation of all intersections, and no private property accesses. within the dunedin area, council planning maps from the 1960s and 1970s show a designation for a "dunedin to milton motorway" which is part of these ministry of works designations.