I-39/90/94 Study - Environmental information

Draft Environmental Impact Statement (DEIS)

WisDOT and the Federal Highway Administration (FHWA) have completed the Draft Environmental Impact Statement (DEIS) for the I-39/90/94 Corridor Study. It is available for review and comment. The Draft EIS documents the need for proposed improvements, the alternatives retained for further study and potential mitigation measures. The Draft EIS has been prepared in accordance with the National and Wisconsin Environmental Policy Acts, and FHWA regulations for preparing environmental documents.

WisDOT and FHWA are evaluating the input received during the comment period.

Comments on the DEIS are due by August 12, 2024.

Comment online via the following link: Comment now

Main sections

• Cover pages, acronyms and summary
• Section 1 - Purpose and need
• Section 2 - Alternatives
• Section 3 - Existing conditions, impacts and mitigation
• Section 4 - Section 4(f) and Section 6(f) evaluation
• Section 5 - Public involvement and agency coordination
• References, distribution list and list of preparers

Appendices

• Appendix A - Build alternatives, typical sections and plans
• Appendix B - Agency correspondence
• Appendix C - Summary of mitigation measures
• Appendix D - Visual impact analysis Mirror Lake bridge replacement
• Appendix E - Flood minimization study summary
• Appendix F - Air quality reports
• Appendix G - Noise analysis
• Appendix H - Indirect and cumulative impact analysis
• Appendix I - Section 106
• Appendix J - Alternatives screening analysis
• Appendix K - Traffic analysis
• Appendix L -Final agricultural impact statement
• Appendix M - Environmental justice plan
• Appendix N - County CS interchange USACE stream features worksheet
• Appendix O - Westland rapid assessment methodology reports

Final Environmental Impact Statement (FEIS)

WisDOT is planning to complete the Final EIS (FEIS) in December 2024.