March 11, 2025 meeting information
Thank you to those who attended the March 11, 2025 public meeting or participated on-line. We appreciate your feedback.
The on-line comment period closed March 25, 2025. People with additional questions or comments can contact the project team with questions.
Public meeting summary
Community members were invited to review the roundabout design, crash history, safety information, and anticipated project timeline. The information was provided at a public meeting Mar. 11, 2025. People not able to attend were directed to review the information below and provide their feedback.
In general, feedback received in-person at the open house was positive. The public’s interests focused mainly on the crash history at the intersection and how the roundabout will affect highway speeds along Hwy 57.
The on-line feedback was split, with various opinions on the proposed project. Those who voiced concerns about the project shared they felt change isn't necessary. Those supporting the roundabout noted the safety benefits and need to prevent future crashes.
Summary of work
The Hwy 57 and Dodge Co. Rd. 16 intersection has a history of right-angle crashes. Right-angle crashes, also known as T-bone crashes, tend to be life-altering or deadly. To reduce these crashes, MnDOT has decided to change the intersection to a roundabout.
The roadway will also be repaved from 9th St. in Mantorville to Dodge Co. Rd. 16. During this work, drainage facilities will also be improved.
When traveling northbound on Highway 57 approaching Dodge Co. Rd. 16, the roundabout design features 6-foot shoulders, 14-foot thru lanes, and a varied median width.
Individuals not able to attend the meeting can review the information below. Please provide any comments or feedback to the project management team through the comments tab.
Meeting content
Construction is scheduled for the summer of 2027. Detour routes and additional construction timeline details will be provided as the project progresses.
Crash data at the intersection was collected from January 2019 through December 2023. Below is the number of crashes sorted by level of injury or damage.
The most common crash type at the intersection was a right-angle crash. Right-angle crashes, also known as T-bone crashes, tend to be life-altering or deadly. Seven right-angle crashes occurred between 2019 and 2023. The fatal crash was a right-angle crash between a car and a pickup truck. One serious and two minor injuries were from vehicles that drove off the road at the curve on the westbound Dodge Co. Rd. 16 approach.
The rate of crashes at this intersection is 13 times higher than average in Minnesota for similar rural intersections with side street stop signs. The rate of fatality or serious injury is 37 times higher than average in Minnesota for similar intersections.
Stakeholder and community engagement
A conflict point is the point at which a highway user crossing, merging, or diverging from a road or drive-way conflicts with another highway user using the same road or driveway.
The more conflict points the higher the number of potential vehicle crashes. Some conflict point types also result in crashes that are severe.
For example, right-angle crashes, also known as T-bone crashes, tend to be life-altering or deadly. Sideswipe crashes are typically less severe.
A safety analysis was performed to find which improvements would create a safer intersection.
Converting the side street stop intersection to a roundabout offers the greatest crash reduction potential.
The analysis shows that roundabouts resulted in a:
- 69% decrease in right-angle crashes
- 80% decrease in fatal and serious injury crashes
Roundabouts have lower approach speeds and fewer opportunities for high-speed angle and left turn crashes, which are more severe and result in more serious injuries.
MnDOT invites and encourages participation by all. If you need an ASL, a foreign language interpreter, or other reasonable accommodation, or need documents in an alternative format (such as braille or large print), please email your request to Janet Miller at ADArequest.dot@state.mn.us or call 651-366-4720.