Planning Study I-29 Exit 86 Renner/Crooks
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Comments will be accepted for 14 calendar days after the meeting date. All written comments received for this public meeting (during the advertised timeframe) will be summarized and publicly shared. Names and addresses will not be released nor shared throughout this process. The summary document of written comments received will be located on the public meeting website page following the conclusion of the written comment period.
Disclaimer: Email addresses and phone numbers will never be sold or used in any manner not related to the project for which this information is being provided.
The South Dakota Department of Transportation (SDDOT) and its partners are studying Exit 86 on Interstate 29 to determine what modifications might be needed at this interchange to accommodate future growth and traffic volumes.
Planning Study Goals
- Develop an Interchange Modification Justification Report for the Federal Highway Administration
- Create Environmental Screen Report and National Environmental Policy Act documents for future planning
- Provide guidance to implement recommended improvements for future construction
Interchange Options
The project teams will be analyzing two interchange examples that were identified in the SDDOT 2020 Decennial Study. Additionally, up to two additional options will be identified and analyzed as part of the study.
Option 1 (Recommended Alternative): Standard Diamond Interchange
Option Two: Single Point Urban Exchange
Option Three:Diverging Diamond Interchange
Timeline
Interchange modifications require various studies and screening reports. This project begins with data collection and analysis to help us develop and refine modification options. Next is the development of the Interchange Modification Justitification Report (IMJR) and Environmental Screening Report (ESR). A more detailed Environmental Analysis occurs during the National Environmental Policy Act (NEPA) process. Lastly, an interchange design is finalized. This design will kick-off the construction phase of this project.
Outreach
Check back for upcoming public information meetings and open house events.
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Public Meeting Open House #2
Date: Wednesday, Jan. 15, 2025
Time: 5:30 - 7 p.m. CT
Place: Jefferson High School 1600 N. Marion Rd. Sioux Falls, SD 57105
Meeting Materials
Resources
Project Documents
Interstate Modification Justification Report March 2024
Previous Studies
Project Partners





