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.
U.S. Route 92
A 1942 map shows US 92 extended west along [[Florida State Road 17 (pre-1945)|SR 17]] and [[Florida State Road 229 (pre-1945)|SR 229]] to end at [[U.S. Route 19 (Florida)|US 19]] in Dunedin; it was soon truncated back to Tampa.