The state trunk highway system includes the following in Roberts County: From State Highway 10 east of Sisseton near the southwest corner of section twenty - six, township one hundred twenty - six north, range fifty - one west, thence north, east and north via Rosholt to the North Dakota state line near the northeast corner of section six, township one hundred twenty - eight north, range forty - seven west. Source: SL 1984, ch 209 , § 66.