Highway 18. The state trunk highway system includes the following in Gregory County: From a point on the Nebraska state line near the southeast corner of section thirty - three, township ninety - five north, range sixty - eight west, thence northwesterly to near the northwest corner of section thirty - three, township ninety - five north, range sixty - eight west. Source: SL 1984, ch 209 , § 36.
State Highway 43 from Nebraska to U.S
SDCL § 31-4-163 — under STATE TRUNK HIGHWAY SYSTEM.
SDCL § 31-4-163