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South Dakota 100 Corridor Preservation Project
The South Dakota Department of Transportation (SDDOT) is continuing to move forward on a highway corridor that will somewhat parallel Interstate 229 (I-229) and be located at the outer edge of the City of Sioux Falls 2025 Growth Plan. This outer corridor, named South Dakota 100 (SD100), will be a 17-mile limited access highway beginning at Exit 73 (Tea Interchange) on Interstate 29 (I-29) and traveling in an east / northeasterly direction intersecting with South Dakota 11 at 57th Street. SD100 then travels straight north intersecting with Interstate 90 (I-90) at existing Exit 402 (Timberline Interchange).
Please read about the background and project goals of this project on the Project Background page. The SD100 corridor alignment can be reviewed on the Corridor Segment Layouts page. The proposed interchange alternatives for proposed interchange at 57th Street and I-90 are on the Interchange Alternatives page. Information distributed during the Public Hearing held on January 17, 2007 along with the presentation given during the public hearing can be reviewed on the Public Involvement page.
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