Some

U.S. Route The United States Numbered Highway System (often called U.S. Routes or U.S. Highways) is an integrated network of roads and highways numbered within a nationwide grid in the contiguous United States. As the designation and numbering of these hi ...

s are given directional suffixes to indicate a split of the main route — for instance,

U.S. Route 25 U.S. Route 25 (US 25) is a north–south United States Highway that runs for in the southern and midwestern US. Its southern terminus is in Brunswick, Georgia, from where it proceeds mostly due north, passing through the cities of Augusta, Georg ...

(US 25) splits into US 25E (east) and US 25W (west) between Newport, Tennessee and

North Corbin, Kentucky North Corbin is a census-designated place (CDP) in Laurel and Knox counties in the U.S. state of Kentucky. The population was 1,727 at the 2020 census down from 1,773 at the 2010 census. The census bureau also lists the Laurel County portion of ...

, and

US 9W U.S. Route 9W (US 9W) is a north–south U.S. Highway in the states of New Jersey and New York. It begins in Fort Lee, New Jersey, as Fletcher Avenue crosses the US 1–9, US 46, and the Interstate 95 (I-95) approaches ...

is an alternate of

U.S. Route 9 U.S. Route 9 (US 9) is a north–south United States highway in the states of Delaware, New Jersey, and New York in the Northeastern United States. It is one of only two U.S. Highways with a ferry connection (the Cape May–Lewes Ferry, between ...

between Fort Lee, New Jersey and

Albany, New York Albany ( ) is the capital of the U.S. state of New York, also the seat and largest city of Albany County. Albany is on the west bank of the Hudson River, about south of its confluence with the Mohawk River, and about north of New York City ...

. These splits were in the U.S. Highway system from the beginning, and were used when two roughly-equivalent routes existed. The

American Association of State Highway and Transportation Officials The American Association of State Highway and Transportation Officials (AASHTO) is a standards setting body which publishes specifications, test quality control, protocols, and guidelines that are used in highway design and construction through ...

(AASHTO) no longer assigns these numbers, and, in theory, current ones are to be eliminated "as rapidly as the State Highway Department and the Standing Committee on Highways can reach agreement". This policy was adopted by 1996; however, many of these routes still exist, mostly in

Tennessee Tennessee ( , ), officially the State of Tennessee, is a landlocked state in the Southeastern region of the United States. Tennessee is the 36th-largest by area and the 15th-most populous of the 50 states. It is bordered by Kentucky to th ...

List of routes

See also

References

External links