 This upgrade includes additional lanes and auxiliary lanes.Over the next decade, the city of Sioux Falls and the South Dakota Department of Transportation plan to construct a limited-access highway around the outer edges of the city to the south and east known as South Dakota Highway 100.This highway will start at the northern Tea exit (Exit 73 on I-29, 101st Street) and will travel east on 101st Street, and curve northeast east of Western Avenue, then turn northerly near Sycamore Avenue.