South Dakota Raises Speed Limit to 80 MPH by: Josh Wolsky | April 2, 2015 If you’re on the Interstate in South Dakota, you can now drive a little faster — 80 MPH is the new limit. This article was sourced from: Maya Rao, Star Tribune Source Josh Wolsky Developer & Writer @TheMinot Voice, Fan of the Souris River, SavorMinot Advocate. Fortunate to be a 'former' City Council member ;) Local Businesses Supporting Local News Want a Daily Minot Update? HiddenName First Last Email(Required) EmailThis field is for validation purposes and should be left unchanged. Δ Related News & Commentary No related posts.