MoDOT evaluating rural highways for potential 75 mph speed limitsJEFFERSON CITY, Mo. (KMIZ) A new Missouri law allowing higher speed limits on certain rural highways is set to take effect Aug. 28, but drivers will not see immediate changes. Gov. Mike Kehoe signed Senate Bill 1408 in July, giving the Missouri Department of Transportation the authority to raise speed limits from 70 to 75ABC17News.com2mo agoWhole story →JusticeBuildMike KehoeS 1408missouri speed limit law