U.S. Route 90
U.S. Route 90 (US 90) is an east–west United States highway. Despite the "0" in its route number, US 90 never was a full coast-to-coast route; it has always ended at Van Horn, Texas with the exception of a short-lived northward extension to US 62/US 180 near Pine Springs, Texas which lasted less than a year, and the signs on that segment were changed to Texas State Highway 54, traveling from Interstate 10 (I-10) at exit 140A and heading to its northern terminus at US 62/US 180.
Business routes of Interstate 90
Interstate 90 Business is a former business loop of Interstate 90 in Vivian. The route began at a diamond interchange at exit 212, at the east end of the overlap with US 83, and northern terminus of South Dakota Highway 53. It ran north, overlapping US 83 until the nearby intersection with South Dakota Highway 248, then turned east overlapping that route until it reached 293rd Avenue. From there, it ran south until finally terminating at I-90 at exit 214, another diamond interchange.