South DakotaDepartment of Transportation
      
      
      
    
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Planning
                                
                                Carbon Reduction Strategy
                                
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                                Non-state Public Road Inventory
                                
                                Pavement Condition Monitoring
                                
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        Special Studies
      
    Special Studies
    
        Final Reports of Completed Studies
    
    
        
    
        Statewide Studies
- SDDOT Long Range Plan
 - SDDOT Intersection Safety Study
 - Interstate Rest Area Investment Study FINAL Report September 2014
 - Major Bridge Investment Study
 - 2018 Interstate Truck Parking Study
 - Electric Vehicle Fast Charging Plan
 - South Dakota Freight Plan
 - South Dakota Carbon Reduction Strategy
 
Expressway Feasibility Studies
- Eastern Dakota and Pierre to I-90 Expressway Executive Summary
 - Eastern Dakota and Pierre to I-90 Expressway Feasibility Complete Study
 - Heartland Expressway Complete Study
 - Heartland Expressway Executive Summary
 
Interchange Justification Studies
- I-29 Exit 1 (Dakota Dunes)
 - I-29, Exit 62 (US18 / Canton; Lincoln County)
 - I-29, Exit 71 (Harrisburg)
 - I-29, Exit 73 (Tea)
 - I-29 Exit 74 / I-229 Exit 0 (85th Street; Sioux Falls/Tea)
 - I-29 Exit 75 / I-229 Exit 1A and 1B (System Interchange; Sioux Falls)
 - I-29 Exit 77 (41st Street; Sioux Falls)
 - I-29, Exit 79 (SD42/12th Street; Sioux Falls)
 - I-29, Exit 80 (Madison Street, Sioux Falls)
 - I-29, Exit 82 (Benson Road, Sioux Falls)
 - I-29, Exit 83 (SD38/60th Street North; Sioux Falls)
 - I-29 Exit 83 (60th St. N.) Interchange Feasibility Study
 - I-29 Exit 86 (Renner/Crooks; Minnehaha County)
 - I-29, Exit 98 (SD115 / Dell Rapids; Minnehaha County)
 - I-29, Exit 130 (20th Street South; Brookings)
 - I-90, Exit 14 (US14A / 27th Street, Spearfish)
 - I-90, Exit 32 (Junction Avenue; Sturgis)
 - I-90, Exit 34 (Black Hills National Cemetery, Meade County)
 - I-90 Exit 37 (Pleasant Valley Road; Meade County)
 - I-90 Exit 44 (Bethlehem Road; Meade County)
 - I-90, Exit 46 (Elk Creek Road; Piedmont/Summerset
 - I-90, Exit 51 (SD79/Sturgis Road; Black Hawk)
 - I-90, Exit 59 (La Crosse Street; Rapid City)
 - I-90, Exit 60 (US16 B/North Street; Rapid City)
 - I-90, Exit 61 (SD437/Elk Vale Road; Rapid City)
 - I-90, Exit 63 (Box Elder / Ellsworth AFB Commercial Gate)
 - I-90 Exit 387 (Hartford)
 - I-90 Exit 395 (Marion Road, Sioux Falls)
 - I-90 Exit 396/I-29 Exit 84 (System Interchange; Sioux Falls)
 - I-90 Exit 399 (Cliff Avenue, Sioux Falls)
 - I-90 Exit 400/I-229 Exit 10 (System Interchange; Sioux Falls)
 - I-90, Exit 402 (Timberline Road / EROS; Minnehaha County)
 - I-90, Exit 406 (SD11 / Corson / Brandon; Brandon)
 - I-190, Exit 1 (Silver Street; Rapid City)
 - I-229, Exit 3 (Minnesota Avenue; Sioux Falls)
 - I-229, Exit 4 (Cliff Avenue; Sioux Falls)
 - I-229, Exit 5 (26th Street; Sioux Falls)
 - I-229 Exit 6 (10th Street)
 - I-229, Exit 9 (Benson Road; Sioux Falls)
 
Corridor Studies
Decennial Studies:
- 2000 Interstate Corridor Study Phase I Final Report (14MB)
 - 2000 Interstate Corridor Study Phase II Final Report (32MB)
 
- 2010 Decennial Interstate Corridor Study Phase 1 Final Report (16MB)
 - 2010 Decennial Interstate Corridor Study Phase 2 Final Report (12MB
 - 2010 Decennial Interstate Corridor Study Phase 3 Final Report (10MB)
 
- 2020 Decennial Interstate Corridor Study Phase 1 Report
 - 2020 Decennial Interstate Corridor Study Phase 2 Report
 - 2020 Decennial Interstate Corridor Study Phase 3 Report
Local Studies: - Box Elder – Highway 1416 / Radar Hill Road
 - Sturgis – Junction Avenue Corridor Study
 - Spearfish - Colorado Boulevard Corridor Study
 
Interstate Studies:
- I-29 Exit 62 to Exit 73 Corridor Study
 - I-29 Corridor: Exit 73 (Tea) to Exit 77 (41st St.) (13MB)
 - I-29 Exit 77 (41st Street) Crossroad Corridor Study
 
- I-229 Major Investment Corridor Study
 - I-229 Mainline / Overall Corridor Final Report
 - I-229 Exit 3 (Minnesota Avenue) Final Report
 - I-229 Exit 4 (Cliff Avenue) Final Report
 - I-229 Exit 6 (10th Street) Final Report
 - I-229 Exit 7 (Rice Street) Final Report
 - I-229 Exit 9 (Benson Road) Final Report
 - I-90 Black Hawk-Sturgis Corridor Preservation Study (51 MG)
 - I-90 Exit 61-67 Corridor Study
 - I-90 Exit 32 to 40 Corridor Study
 - I-190 Corridor / Silver Street Interchange Study in Rapid City
 - I-90/US85 Spearfish Rest Area/Welcome Center Corridor Study
 
Highway Studies:
- S.D. 11 Corridor Study
 - U.S. 12 Ipswich to Aberdeen Corridor Study
 - U.S. 14B Railroad Crossing with DM&E Railroad
 - U.S.14 – US14 Bypass Corridor Study (West Brookings County)
 - U.S. 14/U.S. 83/S.D. 34 Missouri River Bridge Replacement Study
 - U.S. 14 / U.S. 83 Euclid Avenue in Pierre
 - U.S. Highway 14A (Colorado Boulevard) Corridor Study Including I-90 Exit 14 in Spearfish
 - U.S.16 Corridor Study
 - U.S. 16 Rural SubArea Analysis
 - U.S. 16 - U.S. 16B Intersection Study
 - U.S.16 (Mount Rushmore Road/8th Street) Corridor Study through Rapid City
 
- S.D. 42 Corridor Study (MRM373 to Iowa state line) (35 MG)
 - S.D. 42 Western Minnehaha County Corridor Study
 - West 12th Street Transportation Study (SD42) (17 MG)
 - S.D. 44 / Platte-Winner Bridge Corridor Study
 - S.D. 100 / Veterans Parkway Corridor
 - Black Hills Context Sensitive Corridors Study – Phase 1 & 2
 - Pierre Railroad Crossings with DM&E Railroad
 - US14A/SD34 (Lazelle Street) Corridor Study
 - Northern Lincoln County Corridors (SD11 & SD115) Study
 
Area Studies
SPR for Locals Program →- Aberdeen Master Transportation Plan
 - Aberdeen Multi-Use Trails Plan
 - Beadle County Master Transportation Plan
 - Brookings Area Master Transportation Plan
 - Brookings County Master Transportation Plan
 - Brown County Master Transportation Plan
 - Codington County Master Transportation Plan
 - Clay County Master Transportation Plan
 - Custer County Master Transportation Plan
 - Dakota Dunes North Sioux City Traffic Study
 - Davison County Master Transportation Plan
 - Deadwood Pedestrian Circulation & Enhancement Study
 - Dell Rapids Master Transportation Plan
 - Faulkton Master Transportation Plan
 - Gregory (City) Master Transportation Plan
 - Herreid Master Transportation Plan Study
 - Hill City Master Transportation Plan
 - Hughes County Master Transportation Plan
 - Lawrence County Master Transportation Plan
 - Lincoln County Master Transportation Plan
 - Maple/Park Street Corridor Study
 - McCook County Master Transportation Plan
 - Meade County Transportation Plan
 - Mitchell Master Transportation Plan
 - Northeast Pierre Transportation Plan Study
 - Pennington County Master Transportation Plan
 - Spearfish Area Master Transportation Plan (54 MB)
 - Union County Master Transportation Plan
 - Vermillion Area Master Transportation Plan
 - Vermillion Bicycle Master Plan
 - Wall Master Transportation Plan
 - Walworth County Master Transportation Plan
 - Watertown Area Transportation Plan
 - West Yankton County Subarea Transportation Plan
 - Yankton County Master Transportation Plan
 
    
        Ongoing Studies
    
    
        
    
        - I-229 Exit 6 (10th Street) Interchange Study →
 - I-90 Exit 46 (Elk Creek Road) Interchange Modification Study
 - U.S. Highway 14A/US85/Deadwood Box Corridor Study →
 - South Veterans Parkway (Highway 100) →
 - U.S. Highway 212/Forest City Bridge Corridor Study→
 
- I-29 Exit 71 (Harrisburg/Tea) Interchange Study→
 - I-29 Exit 86 (Renner-Crooks) Interchange Study→
 - I-29 Exit 133 (US14 Bypass/Brookings) Interchange Study→
 - I-29 Corridor in the Sioux City MPO Study→
 - Tabor to Platte Rail to Trail Feasibility Study→
 - I-90 Local Road Crossings Study→
 - Lawrence County Master Transportation Study→
 - Tripp County Master Transportation Study→
 - Statewide Active Transportation Study (Available Soon)
 - S.D. Highway 115 Corridor Study→
 - Brookings Area Transportation Plan Update (Available Soon)
 - Chamberlain Area Transportation Study (Available Soon)
 - 10th & 11th Streets Viaduct Replacement Study→
 - S.D. Highway 37 Corridor Study→
 - 278th Street Corridor Study→
 
    
        Statement of Interest
    
    
        
        None at this time.
    
Studies without a link are available upon request from the planning squad leader below.
Contacts
                    Construction Projects
                    Planning
                    
    
                                
                                Carbon Reduction Strategy
                                
                                Freight Plan
                                
                                Long Range Plan
                                
                                Metropolitan Planning Organization
                                
                                Non-state Public Road Inventory
                                
                                Pavement Condition Monitoring
                                
                                Pavement Management
                                
                                South Dakota EV Fast Charging Plan
                                
                                Statewide Transportation Improvement Program – STIP
                                
                                Transportation Asset Management Plan (TAMP)
                    
                    Studies
                    
                                Special Studies
                                
                    Public Meetings
                    
            
                                        SPR
                                        US Highway 16 Corridor Study 
                                        I-229 Exit 3 (Minnesota Avenue) and Exit 4 (Cliff Avenue) Interchange & Environmental Study 
                                        I-229 Exit 6 (10th Street) Interchange Study 
                                        SD44 - Platte/Winner Bridge Corridor Study 
                                        I-90 Exit 46 (Elk Creek Road) Interchange Modification Study
                                        I-90 Exit 63 (Box Elder/Ellsworth AFB Commercial Gate) Interchange Study 
                                        U.S. 385 Roadway Improvement Study
                                        SD 100 Corridor Preservation Project
                                        US14A/US85/Deadwood Box Corridor Study
                                        South Veterans Parkway (Highway 100) 
                                        US Highway 212/Forest City Bridge Corridor Study
                                        Union County Master Transportation Plan Study
                                        Tabor to Platte Rail to Trail Feasibility Study
                                
                    © 2025 State of South Dakota. All Rights Reserved.
South Dakota Department of Transportation
Becker-Hansen Building
700 E. Broadway Ave.
Pierre, SD 57501
          Becker-Hansen Building
700 E. Broadway Ave.
Pierre, SD 57501
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© 2025 State of South Dakota. All Rights Reserved.
South Dakota Department of Transportation
Becker-Hansen Building
700 E. Broadway Ave.
Pierre, SD 57501
          Becker-Hansen Building
700 E. Broadway Ave.
Pierre, SD 57501
Powered by:
Modern Logic
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