South Dakota 01 — Definitions And Classes Of Highways
- 31-1-1 — Highway defined.
- 31-1-2 — Bridges and culverts part of highway.
- 31-1-3 — Existing highways--Continuation as established.
- 31-1-4 — Classification of highways of state.
- 31-1-5 — Administrative systems of highways--Classification.
- 31-1-6 — Federal aid systems--Classification.
- 31-1-7 — Coexistence of administrative and federal aid systems.