SD 44 / Platte-Winner Environmental Assessment and Section 4(f) Evaluation:
- SD44 Platte-Winner Bridge Environmental Assessment and Section 4(f) Evaluation (main document only)
- Appendices (all compiled)
- Appendix A – SD44 Platte-Winner Bridge Corridor Study
- Appendix B – Supplemental Environmental Screening Report
- Appendix C – Farmland Conversion Form
- Appendix D – Noise Memo
- Appendix E – Wetland Delineation Report
- Appendix F – Desktop Wetland & Species Report
- Appendix G – Bridge Eligibility Report
- Appendix H – Section 106 Memorandum of Agreement
- Appendix I – Programmatic Section 4(f) Evaluation Form
- Appendix J – Section 4(f) Exception (g)
- Appendix K – Section 4(f) De Minimis Impact Finding
- Appendix L – Phase I Environmental Site Assessment
- Appendix M – Agency and Tribal Correspondence
- Appendix N – Section A Environmental Commitments
- Appendix O – List of Preparers
NOTE: The Environmental Assessment document was signed by FHWA and SDDOT on May 25, 2023. Publication notices have been submitted for formal announcement of a comment period that will run from June 1, 2023 to July 7, 2023.
SD Highway 44 / Platte-Winner Bridge Corridor Study:
- SD44 Platte-Winner Bridge Corridor Study (complete document)
- SD44 Platte-Winner Bridge Corridor Study (main report only)
- Appendices (all compiled)
- Appendix A – Existing Bridge Plan Sheets
- Appendix B – Geometric Review
- Appendix C – Traffic Operations
- Appendix D – Crash History Review
- Appendix E – Geotechnical Risk Evaluation
- Appendix F – Bridge Foundations Zone of Influence
- Appendix G – Bridge Types Evaluation
- Appendix H – Scoping Alignment Alternatives
- Appendix I – Alternatives Evaluation Matrices
- Appendix J – Bridge Abutment Concepts
- RECOMMENDED ALTERNATIVE ALIGNMENT MAP
Project Memos:
- Crash History Review (7/5/17)
- Geometric Review (7/5/17)
- Geotechnical Risk Evaluation (7/6/17)
- Overview of Potential Bridge Types (7/25/17)
- Traffic Operations Analysis (7/25/17)
Historical Documents:
- S.D. Long Range Transportation Plan (September 2010)
- S.D. Wildlife Action Plan (2014)
- U.S. Army Corps of Engineers – Fort Randall Dam / Lake Francis Case Master Plan (September 2014)