Highways impacted include sections of Highways 30, 83, 86, 169 and 257
Five two-lane highways in south central Minnesota will have speed limit increases from 55 miles per hour to 60 miles per hour by Sept. 29. The sections of highway which will have increased speed limits are:
•Highway 30, Westbrook to Highway 4
•Highway 169 from Iowa to Mankato
•Highway 257 (Hanska)
The speed limit is effective when the new signs are posted. Existing stop conditions or urban environments are used for the transition in speeds so that motorists will see a posted sign.
“A speed study gives MnDOT the opportunity to review speed limits on 55 mph state highways in our area and identify those that can support a higher speed limit without compromising safety,” said Scott Thompson, MnDOT traffic engineer.
The increases are based on a traffic and engineering investigation of each highway, which looks at past crash history, physical attributes of the highway such as shoulder widths and access points, and what speed drivers are currently driving. The increases are the result of a 2014 legislative mandate for MnDOT to study posted speed limits on all two-lane state highways and make recommendations for possible speed limit increases.
In some cases, the study results in the speed limit staying the same. In south central Minnesota, several more two-lane highways have the study fieldwork complete and await final data analysis. These roads could have speed changes coming as early as this winter.
In the fall of 2016 the following south central Minnesota highway sections were changed from 55 to 60 mph:
•Highway 68 from Morgan to Highway 4
•Highway 5 from Highway 19 at Gaylord to Highway 212
•Highway 109 from Highway 169 at Winnebago to Highway 22 at Wells
•Highway 60 from Highway 14 to Highway 13 at Waterville
Minnesota has about 7,000 miles of two-lane roads that will be studied between 2014 and 2019. A 2015 report on the evaluation of speed limits can be found at www.mndot.gov/speed/.