Business Loop I-90 - Wall

bl-090-w-wall — SD 240 concludes a 40.03 mile route at the east end of Business Loop I-90 in Wall. The Badlands Loop follows former Alternate U.S. 16 south and east to I-90 at Cactus Flat. The Wall business loop angles northwest from Glenn Street nearby to intersect Main Street, three blocks south of the famous Wall Drug. 08/13/10

Business Loop I-90 at Wall travels 1.8 miles between diamond interchanges at Exits 109 and 110 within the town. The route bypasses the city center and the regionally famous Wall Drug Store in favor of a surface route bypass along South Boulevard, from Airport Road (old U.S. 14/16) to Glenn Street. Glenn Street returns the route to I-90/U.S. 14, opposite the beginning of South Dakota Highway 240, the Badlands Loop to Badlands National Park.

The Wall #SouthDakota Business Loop for I-90 bypasses the business district and instead serves a school & just a handful of services #roads
— AARoads (@AARoads) August 12, 2016

Updated August 1, 2026