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 in Florida
Every other street that US 90 intersects from that point on is local and even less notable until it reaches County Road 195 (Sapp Road). Shortly after the road intersects Railroad Street, it enters the City of Cottondale, where the street name changes to Levy Street, and the asphalt becomes concrete as it descends beneath a concrete arch bridge beneath the Atlanta and Saint Andrews Bay Railway. Out from under that bridge, one other local intersection can be found to the south before the road intersects U.S. Route 231. After the intersection with Willow Street, another former segment of the road named "Pontiac Loop," branches off to the southeast. As the road leaves the city limits, it makes a slight curve to the southeast at London Road, which ends when it meets Whiteville Road, but not until after Pontiac Loop terminates with US 90. The route remains straight east and west from here, and along the way has an intersection with unmarked former CR 10A (Old Cottondale Road). Two intersections later, US 90 is given the name West Lafayette Street before it enters the City of Marianna where right after entering the city limits it curves to the northeast to run beneath a bridge under the P&A Subdivision followed by a sudden change into a four-lane undivided highway and a wye with the intersection of State Road 73. At the southeast leg of this wye a concurrency with SR 73 begins, which itself has a concurrency with CR 164. US 90/SR 73/CR 164 serves as the eastern terminus of State Road 276 (Pennsylvania Avenue), which continues north as Bumpnose Road. Later it becomes the eastern terminus of former CR 10A (Old Cottondale Road). After curving around the 1895-built Joseph W. Russ Jr. House which is also the county visitor's center, and then the 1840-built Ely-Criglar House and a bed & breakfast next door, the road intersects Wynn Street and serves as the southern border of the Marianna Historic District, remaining four-lanes wide.