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SD100 - Project Background
South Dakota 100 (SD100) is a proposed new limited access principal arterial roadway around the City of Sioux Falls (City). Since 1995, the proposed Eastside Corridor project has been planned to address future transportation needs of the Sioux Falls area and, if constructed, is expected to become an integral component of the South Dakota Department of Transportation’s (SDDOT) and City’s transportation system. SD100 will serve regional trips and preserve the function and working performance of the future minor arterial and collector street system.
In 2000, the City assembled a Process Team to further address concerns of a future corridor along with identifying potential alignments. By the fall of 2001, with an alignment selected, the Process Team recommended a Build-Alternative to the Urban Development Commission (UDC). The UDC approved the Build-Alternative and the Process Team began preparing an Environmental Assessment (EA) document. The Final Environmental Assessment for the Sioux Falls Eastside Corridor was approved on March 20, 2003.
Following the approval of the EA, the City of Sioux Falls and the SDDOT reached an agreement that transferred responsibility of the Eastside Corridor to the SDDOT. Following taking possession of the corridor, the Eastside Corridor became SD100. In October 2005, the SDDOT started preparing to begin preserving the Right-of-Way (ROW) for SD100. As the SDDOT progressed with conceptual analysis of the corridor, it was determined that modifications to the EA approved alignment were needed. In addition to the corridor alignment review, interchange alternatives at the intersection of 57th Street / SD100 and Interstate 90 / SD100 are also being analyzed.
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