Documents

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Historical Documents: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)