Business Loop I-229 - Sioux Falls

Business Loop I-229 south at I-229 in Sioux Falls, SD — An end shield for Business Loop I-229 precedes the diamond interchange where Minnesota Avenue (SD 115) meets I-229. Photo by Jeff Morrison (06/26/06).

Business Loop I-229 east at SD 42 in Sioux Falls — Downtown Loop I-229 turns east from Minnesota Avenue (SD 115) to overlap with SD 42 along 11th Street to the Whittier neighborhood. Photo by Jeff Morrison (06/26/06).

I-229 through Sioux Falls comprises an urban loop and commuter route connecting I-29 and I-90. The freeway bypasses the city center to the east while I-29 stays well to the west. Business Loop I-229 connects Downtown Sioux Falls with I-229 to the south via Minnesota Avenue (old U.S. 77) north from Exit 3 and 10th and 11th Streets (old U.S. 16) west from Exit 6. The 4.4 mile long route overlaps with SD 115 on the north-south leg and SD 42 along the east-west leg and couplet of 10th/11th Streets.

Many of the signs for Business Loop I-229 were removed during a construction project in 2003.³ These were restored by 2007, following a maintenance transfer of the route from SDDOT to the city of Sioux Falls. Like the other business routes in Sioux Falls, signs for BL I-229 often display "Downtown" in place of Business.

Updated August 4, 2026