Environmental Assessments
- 85th Street Improvements: Sundowner Ave. to Louis Ave., including I-29 overpass, and 85th St. Improvements from Louise Ave. to Tallgrass Ave. in Sioux Falls; Lincoln County, SD
Notice of Public Meeting - Dec. 5, 2017 - and Environmental Assessment approved for Public Availability
- US14/US83/SD34 Bridge over the Missouri River between Pierre/Ft. Pierre
- South Rochford Road EA
The South Dakota Division of the Federal Highway Administration has recently completed an Environmental Assessment (EA) and Draft Section 4(f) Evaluation regarding proposed improvements to South Rochford Road. You are invited to attend a public meeting scheduled to discuss the EA. The meeting will be held Wednesday, April 20th from 5-7pm (MST) at the Hill City High School.
- I-229 Exit 5 (26th Street) Interchange in Sioux Falls
Notice of Public Information Meeting - January 14, 2015 - and availability of Environmental Assessment (EA) & Section 4(f) De Minimis Analysis
- East Side Corridor (S.D. 100 North Segment) from I-90 to South of Madison Street in Sioux Falls
Reevaluation - Environmental Assessment & Final Section 4(f) Evaluation
Reevaluation - Environmental Assessment & Section 4(f) De Minimis Impact Finding
Reevaluation - Environmental Assessment & Section 4(f) De Minimis Impact Finding
Finding of No Significant Impact (FONSI) & Section 4(f) De Minimis Impact Finding
Notice of Public Meeting - October 21, 2014 - and availability of Environmental Assessment
- Peter Norbeck Scenic Byway Lake Enhancements Projects (on Bismarck, Horsethief, & Lakota Lakes)
- US16 - From 1 mile West of Jewel Cave National Monument to 0.5 miles East of Jewel Cave National Monument
- Downtown Sioux Falls Rail Yard Redevelopment Project
- I-190 Silver Street Interchange in Rapid City
- Spearfish Canyon Recreation Site Improvements - Bridal Veil Falls & Long Valley Picnic Ground
- US85 project in Deadwood from US385 Jct. to Cemetery St.
- South Dakota School of Mines and Technology Connector Road in Rapid City
- Noise Studies on Interstate 29 from Interstate 229 to 26th Street in Sioux Falls
- I-90 West, Exit 40-Exit 51
This project provides greater separation between service roads and I-90 to facilitate future 6-lane potential.
- Environmental Assessment
- East Side Corridor (SD100 South Segment) from I-29/County Road 106 (Exit 73) to south of 26th Street in Sioux Falls
- Environmental Assesment
- Appendix A - Traffic Study
- Appendix B - SD100 Access and Noise Plan
- Appendix D - Interchange Options
- Appendix E - Utilities Correspondence
- Appendix F - Noise Study
- Appendix G - USDA Farmland Conversion Impact Rating Form (Form CPA-106)
- Appendix H - Agency Correspondence
- Appendix I - Executive Order 11990 Wetland Finding
- Appendix J - February 7, 2006 Public Information Meeting Items
- Appendix K - January 17, 2007 Public Hearing Items
- Appendix L - Section 4(f) De Minimis Impact Finding
- Appendix M - November 22, 2011 Public Information Meeting Items
- Solberg Avenue - Tallgrass Avenue Overpass of I-229 in Sioux Falls
This project will construct a new street that will connect Solberg Avenue at 59th Street to Tallgrass Avenue at 69th Street in Sioux Falls. It will include an overpass of I-229.
- Notice of Public Availability
- Draft Environmental Assessment
- Appendix A - Traffic Operations Technical Memorandum
- Appendix B - Agency Correspondence
- Appendix C - Wetland Assessment Report
- Appendix D - Executive Order 11990 Wetland Finding
- Appendix E - Public Involvement
- Public Meeting URS Presentation
- Pierre Railroad Grade Separation
This project provides a separated railroad crossing in East Pierre to connect the highway routes through Pierre without at-grade railroad crossing delays. It includes a new highway alignment from the existing S-Curve east along Sioux Avenue to a highway overpass near Polk Street and Wells Avenue. It will allow all traffic and emergency response better access through Pierre.
- Environmental Assessment
- EA Maps & Attachments
- EA Appendix A
- EA Appendix B
- EA Appendix C
- EA Appendix D
- EA Appendix E
- Watertown South Connector Route - US 81 to 29th Street SE
- Watertown South Connector Route from US Highway 212/SD 20 Intersection to US Highway 81