 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.The present constructed motorway generally follows along the route of this early designation.