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 90 Business (New Orleans, Louisiana)
East of the Harvey Canal, US 90 Bus. heads northwest, returning to its prior elevation and connecting to Manhattan Boulevard via exit 6. It then enters the city of Gretna, the seat of Jefferson Parish government. Two interchanges serve Gretna: exit 7 to LA 18/LA 23 (Lafayette Street) and exit 8 to Stumpf Boulevard. Between these two exits, the expressway frontage roads run concurrent with LA 23, which continues northwest onto Stumpf Boulevard. While passing alongside the Oakwood Center shopping mall, US 90 Bus. enters into its final interchange on the west bank: exit 9 to Terry Parkway and General de Gaulle Drive. These are parallel divided thoroughfares, the former serving the mall and adjacent neighborhood of Terrytown. The first portion of the exit is a tight half-diamond interchange consisting of an eastbound exit and westbound entrance that utilize the frontage roads to connect with both thoroughfares.