Business Spur I-90 in Sioux Falls is a locally maintained route joining the city center with Interstate 90 at Exit 399. The 5.1 mile route follows Minnesota Avenue north from the intersection of 11th Street (Business Spur I-29 east and Business Loop I-229 north) in Downtown to Sioux Falls Regional Airport (FSD) and Benson Road. Benson Road takes the route east to Froehlich Addition and Cliff Avenue. Cliff Avenue leads Business Spur I-90 north to I-90.
SD 115 follows portions of the former route of U.S. 77 through Sioux Falls. The locally maintained highway along both Business Spur I-90 and Business Loop I-229 provides a signed through route in Sioux Falls. SD 42 provides a similar function along former U.S. 16.
Like the business routes for I-29 and I-229, city installed signs for the I-90 component reference Downtown Spur I-90 instead of Business. Signing for Downtown Spur I-90 and companion SD 115 is inconsistent, with shields for the spur absent at the exchange with Interstate 90.
Construction in 2013 reconfigured the interchange between Cliff Avenue and Interstate 90 from a diamond into a SPUI.
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| SD 115/Business Spur I-90 north at 9th Street in Downtown Sioux Falls. 08/13/16 |
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| 8th Street crosses the Big Sioux River and proceeds three blocks west to intersect Minnesota Avenue. 08/13/16 |
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| 6th Street crosses SD 115 (Minnesota Avenue) east from Burnside Park and west from the Whittier neighborhood. 08/13/16 |
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| Minnesota Avenue advances north by the Minnehaha County government complex to 2nd Street. 2nd Street heads six blocks west to Terrace Park. 08/13/16 |
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| SD 115 shield at Minnesota Avenue and 1st Street. 08/13/16 |
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| Russell Street constitutes a major arterial route west from SD 115 (Minnesota Avenue) to Sioux Falls Arena / Convention Center and Interstate 29 at Maple Street. 08/13/16 |
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| Confirming marker posted north of Russell Street. Russell Street was formerly SD 38 west to I-29 and U.S. 77 east to North Drive. 08/13/16 |
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| Algonquin Street angles northwest from SD 115 to air cargo facilities at Sioux Falls Regional Airport (FSD). 08/13/16 |
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| SD 115 (Minnesota Avenue) navigates through an S-curve beside the runways for Sioux Falls Regional Airport (FSD). 08/13/16 |
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| Business Spur I-90/SD 115 (Minnesota Avenue) north at Jaycee Lane. Jaycee Lane is the loop west from Minnesota Avenue to the passenger terminal of Sioux Falls Regional Airport (FSD). 08/06/16 |
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| SD 115 turns east onto Benson Road from Minnesota Avenue across the Big Sioux River Diversion Canal. Business Spur I-90 is unmarked here. 08/06/16 |
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| Benson Road proceeds east to a signalized intersection with N 4th Avenue. 08/06/16 |
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| SD 115 reassurance marker posted east of 4th Avenue along Benson Road. 08/06/16 |
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| SD 115 turns north onto Cliff Avenue after a 0.9 mile stint along Benson Road. 08/06/16 |
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| The city of Dell Rapids lies 16 miles to the north from Benson Road via SD 115. 08/06/16 |
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| Benson Road extends east from SD 115 and Cliff Avenue one mile to Interstate 229. 06/17/15 |
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| A reassurance marker for SD 115 appears along Cliff Avenue north after Benson Road. Typical of most Interstate business routes, confirming markers are replaced with trailblazers for the parent route on the return. 06/17/15, 08/06/16 |
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| Cliff Avenue continues north along a commercial strip to E 54th Avenue. 54th Avenue serves industrial park areas both west and east of Business Spur I-90/SD 115. 08/06/16 |
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| Business Spur I-90/SD 115 (Cliff Avenue) north at E 60th Street. 08/06/16 |
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| Travelers services line Business Spur I-90/SD 115 (Cliff Avenue) north from E 60th Street to the single point interchange with Interstate 90. 08/06/16 |
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| Business Spur I-90 ends while SD 115 continues along former U.S. 77 north toward Baltic. 08/06/16 |
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| Interstate 90 runs across northern reaches of Sioux Falls between Hartford and Brandon. Luverne, Minnesota lies 25 miles to the east along U.S. 75. 08/06/16 |
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| Interstate 90 continues west three miles from Cliff Avenue to the exchange with I-29 on the northwest side of Sioux Falls. 08/06/16 |
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| Entering the previous diamond interchange with Interstate 90 along Business (Downtown) Spur I-90/SD 115 north. 04/20/07 |
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| SD 115 (Cliff Avenue) advances north from I-90 and Business Spur I-90 to a traffic light with Dike Drive / Place. 08/06/16 |
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| SD 115 (Cliff Avenue) heads south into the city of Sioux Falls beyond E 72nd Street. Approaching Interstate 90 and Business Spur I-90, Cliff Avenue intersects Dike Place west and Dike Drive east. 08/06/16 |
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| SD 115 advances south with four lanes to the single point urban interchange (SPUI) with Interstate 90. 08/06/16 |
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| Interstate 90 runs across the north side of Sioux Falls, connecting the city with the suburb of Brandon to the east. 08/06/16 |
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| The SPUI joining Cliff Avenue with I-90 replaced a diamond interchange. 08/06/16 |
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| The first marker for Business Spur I-90 south appeared along Cliff Avenue south between I-90 and E 60th Street. It was removed during reconstruction of the Cliff Avenue ramps with Interstate 90 in 2013. 04/20/07 |
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| SD 115 and Business Spur I-90 turn west onto Benson Road from Cliff Avenue south. Cliff Avenue south to North Drive is the historic alignment of U.S. 77. 08/06/16 |
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| A reassurance marker for SD 115 appears along Benson Road just after the turn from Cliff Avenue. 06/17/15 |
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| Benson Road west runs alongside the Froehlich Addition neighborhood to 4th Avenue. 06/17/15 |
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| Downtown Spur I-90/SD 115 cross over the Big Sioux River Diversion Canal and intersect Minnesota Avenue beside Sioux Falls Regional Airport (FSD). 06/17/15 |
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| A four lane divided highway, Minnesota Avenue parallels a BNSF Railroad line between FSD Airport and the Big Sioux River Diversion Canal. 06/17/15 |
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| Jaycee Lane loops west from Downtown Spur I-90 (Minnesota Avenue) to the passenger terminal of Sioux Falls Regional Airport (FSD). 06/17/15 |
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| Leaving the airport, Minnesota Avenue kinks west to intersect Algonquin Street. Algonquin Street angles northwest to the FSD Airport cargo facilities. 06/17/15 |
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| Russell Street leads west as a six lane arterial to Interstate 29 and the northwest suburbs of Sioux Falls. The street was formerly a part of SD 38 to the west and U.S. 77 between Minnesota Avenue and North Drive to the east. 06/17/15 |
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| Downtown Spur I-90 is again omitted on this SD 115 shield assembly posted south of Russell Street. 06/17/15 |
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| Minnesota Avenue enters the Sioux Falls residential street grid south of Russell Street. 2nd Street connects SD 115 with the Terrace Park neighborhood to the west. 06/17/15 |
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| Shields for Downtown Spur I-90/SD 115 are posted along the descent of Minnesota Street between 2nd and 4th Streets. The commercial boulevard lowers around 50 feet in elevation. 06/17/15 |
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| Southbound Minnesota Avenue at 6th Street beside the Minnehaha County Administration building. 06/17/15 |
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| 8th Street intersects Minnesota Avenue west of the Whitter neighborhood and east of the Cathedral Historic District beyond Downtown. 06/17/15 |
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| SD 115 reassurance shield posted between 8th and 9th Streets in Downtown Sioux Falls. 06/17/15 |
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| Sioux Falls City Hall lies one block to the east of Minnesota Avenue along 9th Street. 06/17/15 |
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| Installed in 2003, an end shield for Downtown Spur I-90 precedes SD 42. Doubling as Downtown Spur I-29 west to the Garfield neighborhood and Downtown Loop I-229 east to the Whittier neighborhood, SD 42 follows old U.S. 16 along the couplet of 10th and 11th Streets. 06/17/15 |
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| Jaycee Lane loops west from Business Spur I-90/SD 115 (Minnesota Avenue) to the passenger terminal of Sioux Falls Regional Airport (FSD). 08/13/16 |
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| This overhead precedes the southbound return of Jaycee Lane to Minnesota Avenue. 08/06/16 |
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| Travelers heading from FSD Airport to I-29 or I-90 are both directed onto SD 115/Business Spur I-90 north. 08/13/16 |
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| Benson Road leads west from Interstate 229 to Cliff Avenue as an unnumbered route. Lewis Avenue intersects the five lane boulevard north from the Norton Acres neighborhood. 06/17/15 |
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| SD 115 overtakes Benson Road west from Cliff Avenue as a locally maintained route. 06/17/15 |
Photo Credits:04/20/07, 06/17/15, 08/06/16, 08/13/16 by AARoads
Connect with:
Interstate 90
Highway 42
Page Updated 02-17-2020.
