The Department of Transportation may at its discretion extend the state trunk highway system to include any street or streets within the limits of any first or second class municipality if necessary to make a continuous route for any state trunk highway through the municipality.
S.D. Codified Laws § 31-4-3
Inclusion of city streets in system
Source: SDC 1939, § 28.0209 as added by SL 1939, ch 107, § 1; SL 1953, ch 139.
Official source: South Dakota Legislature. Reproduced from public-domain South Dakota statutes; confirm against the official source for the current text. Not legal advice.