I-229 EXIT 3 (MINNESOTA AVENUE) INTERCHANGE OPTIONS STUDY
The land use around the I-229/Minnesota Avenue interchange is diverse and ever changing. Minnesota Avenue, for many, is the original gateway to downtown from the south part of Sioux Falls. Over the years, commercial development has lined this corridor providing retail opportunities to fill a large range of demands. This interchange, along with a few thousand feet of Minnesota Ave to 41st Street, is certainly in a high traffic volume area. South of I-229, land quickly changes from commercial uses to residential. Minnesota Avenue at I-229 is a vital link between two different parts of Sioux Falls divided by the Big Sioux River.
In 2013 and 2014, a study will be conducted to determine ways to:
Reduce traffic congestion on Minnesota Avenue.
Evaluate improvement options for the existing interchange, in order to serve the access needs of the South Dakota Department of Transportation, the City of Sioux Falls, and adjacent landowners.
Evaluate plans for the extension of 49th Street between Western Avenue and Minnesota Avenue.
Improve pedestrian connections to the bike trail system.
Improve safety to the Yankton Trail Park access.
Ensure that potential roadway improvements have minimal or no impacts to environmental features such as floodplains, wetlands, vegetation, and wildlife.
Improve safety to businesses and residential properties in the Study Area.
A few things are going on right now: The study advisory team has identified a need to add Exit 7 (Rice Street) as Sub-study 5 and Exit 4 (Cliff Avenue) as Sub-study 6. Based on the initial findings additional study is required to determine what future improvements may be needed at those locations. We are also working on a higher level safety evaluation on the build alternatives that are still being considered for the sub-studies. As a result of the added sub-studies and the detailed safety analysis, the next public meeting will be delayed until the summer of 2016, when preliminary alternatives for Rice Street and Cliff Avenue will be presented. The next overall public meeting for all sub studies will take place late fall/early winter 2016, continue to check the website for updates. The following links will provide information as to which of the sub-study alternatives have been eliminated from further study.
Based on feedback from our December 2014 small group/business owners meetings, we have generated and then refined concept improvement options throughout the I-229 corridor. These concept improvement options are intended to accommodate future traffic volumes, at least to our year 2035 planning horizon.
The concept improvement options have been reviewed by the project Study Advisory Team and will be presented at our June 1 and 2 public meetings. We look forward to your feedback on these concept improvement options at these meetings or via responses to this web site. The concept improvement options will be posted on the web site on June 3, 2015.
Updated May 22, 2015
The I-229 Major Investment Study team will begin investigating interchange improvements along I-229 and corridor improvements on Minnesota Avenue, 10th Street, and Benson Road in the vicinity of I-229 starting in October, 2014. At our initial public meeting in October, 2013, we discussed using specialized modeling software to complete “Dynamic Traffic Assignment” (DTA) which would provide the most accurate means for us to observe how different alternatives being studied would impact traffic on specific corridors adjacent to I-229 or I-229 itself.
The DTA model is complete and is ready to be used to screen the alternatives that our team, and you as stakeholders, helped us generate as we work through alternative development phase. Looking back on the previously provided schedule, our team was optimistic that the process to develop and construct this complex model would take far less time. In reality, this model development phase took significantly more time than anticipated. We want to share the good news that the DTA model is complete and we can continue moving forward on the study tasks important to all of us.
Moving forward, we are identifying mid winter for small group/business owner meetings and late winter / early spring for our next public meeting. Meeting invitations will be sent out for all upcoming meetings. The small group/business owners meetings will be specific to the Minnesota Avenue, 10th Street, and Benson Road corridors, with one meeting held for each corridor. This will allow for feedback on improving safety and ideas for managing congestion. Thank you for your patience and our team looks forward to seeing you soon.
Updated Oct 3, 2014
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