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 business loop of Interstate 90 in Big Timber. It runs from a diamond interchange at exit 367 on I-90 at the east end of an overlap with US 191. BL-90/US 191 run northeast into downtown Big Timber along West First Avenue. At McLeod Street (S-298) West First Avenue becomes East First Avenue. Then after the intersection with Bramble Street, US 191 continues northeast, while BL-90 curves southeast onto Big Timber Loop Road (Old U.S. 10). After leaving the heart of the city, it passes by the River Rocks Campground on the foot of a bridge over the Boulder River, then the Overland Golf Course. Winding northeast around a former segment of the road still used by local farmers, BL-90 finally turns south and ends at a diamond interchange with I-90 at exit 370. Old US 10 continues as a local road east of that point.