CSAH 100 Corridor Study

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St. Louis County is leading a corridor study of CSAH 100 (3rd Ave N/Main St), beginning at a point 0.22 mile east of MNTH 135 and ending at CSAH 110 (Hwy 110), for a total length of 1.83 miles in the City of Aurora. The outcome of this study will be the preferred corridor layout which will be used for the planned reconstruction project on this corridor in 2026. This study is anticipated to be completed by this December 2024.

The key focus areas of the corridor study include…

  1. Complete an intersection control evaluation (ICE) of Main St and 3rd Ave N. The ICE will recommend a long-term intersection control strategy.
  2. Develop a typical section(s) for the CSAH 100 corridor.
  3. Develop a 2D (aerial view) layout for the CSAH 100 corridor.


Get Involved

Share your insights, experiences, and questions as we look to develop a community-supported vision before we develop a project.

  • Attend public meetings (in-person or virtually)
  • Complete the online survey
  • Complete the online comment map


Stay Informed

  • Sign up for email updates


St. Louis County is leading a corridor study of CSAH 100 (3rd Ave N/Main St), beginning at a point 0.22 mile east of MNTH 135 and ending at CSAH 110 (Hwy 110), for a total length of 1.83 miles in the City of Aurora. The outcome of this study will be the preferred corridor layout which will be used for the planned reconstruction project on this corridor in 2026. This study is anticipated to be completed by this December 2024.

The key focus areas of the corridor study include…

  1. Complete an intersection control evaluation (ICE) of Main St and 3rd Ave N. The ICE will recommend a long-term intersection control strategy.
  2. Develop a typical section(s) for the CSAH 100 corridor.
  3. Develop a 2D (aerial view) layout for the CSAH 100 corridor.


Get Involved

Share your insights, experiences, and questions as we look to develop a community-supported vision before we develop a project.

  • Attend public meetings (in-person or virtually)
  • Complete the online survey
  • Complete the online comment map


Stay Informed

  • Sign up for email updates


  • CSAH 100 Survey

    Thank you for your time to complete this survey for the CSAH 100 (3rd Ave N/Main St) Corridor Study. Your input is very valuable. This survey is expected to take less than 10 minutes.


    St. Louis County, in coordination with the City of Aurora, is exploring potential improvements along CSAH 100 (3rd Ave N/Main St) beginning 1/4 mile east of MNTH 135 and ending at CSAH 110 (Hwy 110). This survey will help explore the community’s perspective on current issues and potential improvements.


    The project team began studying this corridor in January 2024 and will be making recommendations for improvements in the Fall of 2024. These recommendations will be implemented on the CSAH 100 (3rd Ave N/Main St) corridor by St. Louis County with a planned reconstruction project in 2026.

    Take Survey
    Share CSAH 100 Survey on Facebook Share CSAH 100 Survey on Twitter Share CSAH 100 Survey on Linkedin Email CSAH 100 Survey link
Page last updated: 01 May 2024, 09:53 AM