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.
Louisiana Highway 94
Since its creation, LA 94 has seen only minor changes affecting its western and eastern ends. The original western terminus in Lafayette was located at the present junction of US 90 (Cameron Street) and US 90 Business/LA 182 (University Avenue). At the time, US 90 turned south at this intersection and followed the current business route through the downtown area. LA 94 followed the current route of US 90 east along Cameron Street. It then made a zigzag south onto St. John Street and east onto Simcoe Street, crossing what later became the Evangeline Thruway and joining the present alignment at Louisiana Avenue.