Skip to main content

Get to the Black Hills faster: SD speed limit going up to 80 mph


Getting from one end of South Dakota to the other will be a slightly faster trip come Wednesday.

The speed limit on some major highways will increase to 80 mph, Forum News Service reports, a change approved by lawmakers and signed by the governor this year.

The increase (from 75 mph) affects South Dakota's interstate highways – which is really just two highways. One (Interstate 29) cuts north-south, near the eastern border of the state. The other (Interstate 90) goes east-west, from the border of Minnesota to Wyoming.

An unscientific Argus Leader poll found 63 percent of respondents for it, and 37 percent against it.

Forum News Service notes the speed limit will stay where it's been in cities, which vary, and other highways will remain at 75 mph.

In Minnesota, the highest speed limit comes on rural interstate highways, topping out at 70 mph. The state's Department of Transportation is currently studying highways across the state, seeing if a speed limit increase makes sense.

Do higher speeds mean more accidents?

The speed limit has gone up on many U.S. highways, the LA Times reports, especially in the more open, western states. And safety officials note high speeds are a contributing factor in one-third of all highway deaths in the country.

But that doesn't mean there are more total accidents.

When Texas was considering raising one highway's speed limit to 85 mph, Slate came to the conclusion higher speeds don't cause more crashes and accidents – but when those crashes and accidents happen, they tend to be more severe.

Trucks may require more attention however.

An Associated Press report from this week found most truck tires are designed for a maximum speed of 75 mph – and going above that meant risking a blowout. Driving faster than 75 mph was the likely cause in 16 different tire blowouts examined, the AP says a federal investigation determined.

Next Up

st anthony 3 crop

Twin Cities police ask for help finding missing 16-year-old

Police say all her family and friends have been contacted, and none of them know where she is.

mpd suspect 12.3.21 - 1 - CROP

MPD releases photos of shooting suspect, asks for public's help

The man is wanted in connection with a fatal shooting that happened Wednesday evening.

redmons popcorn colbert 2

Support grows for Redmon's Popcorn after shop's sudden closure

The county also commented on the situation, saying it hopes to help owner Zack Redmon.

prior lake high school

Prior Lake HS investigating another 'racist' video involving student

The principal said the social media video was reported to them this week.

Screen Shot 2021-12-03 at 3.08.27 PM

Walz: Minnesota has secured 1 million rapid, at-home COVID tests for kids

It comes as the delta variant continues to surge in Minnesota, and the omicron variant might follow.

boundary waters

Forest Service limiting permits to BWCAW due to damage, overcrowding

Visitors have been cutting down trees and have been forced to compete for campsites.

police lights

Lockdown update: Armed man threatened to go to Kimball High School

A high school and elementary school near St. Cloud went into lockdown as a precaution.

chaska sewer

People in Chaska are flushing the wrong crap down the toilet

Water and sewer crews in Chaska have had to clean the same pump four times in the past seven days.

Brian O'Neill

Matthew Coller: What if the Vikings didn't have Detroit?

The Lions have been like two freebies on the Vikings' schedule the past three seasons.

water drain

MN will get $116M for water projects as part of infrastructure package

Nationwide, $7.4 billion will be distributed for projects next year.


3rd teenage death from COVID-19 reported in Minnesota

All three of the teenage deaths have occurred in the past three months.