Highway 12 to State Highway 10. The state trunk highway system includes the following in Edmunds and McPherson counties: From a point on U.S. Highway 12 in Roscoe near the southeast corner of section twenty - four, township one hundred twenty - three north, range seventy - one west, thence north via Roscoe to State Highway 10 near the northeast corner of section two, township one hundred twenty - six north, range seventy - one west. Source: SL 1984, ch 209 , § 92.