Wikipedia:Naming conventions (U.S. state and territory highways)

Main page: Wikipedia:Naming conventions

This Naming Convention is intended to standardize the naming formats used in articles pertaining to highways in the United States.

The highway types covered by this convention have two naming formats – official name and article title – which can be the same. The official name is the naming format typically used by the state department of transportation (DOT) or the general public, and is what should be used to refer the highway in article prose. The article title is a disambiguated form obviously used for article naming, and should only be used in article prose if a sentence would otherwise be ambiguous.

U.S. state highways

The following are systems of state highways maintained and numbered by each U.S. state, territory or district. The naming conventions listed below may be supplemented by guidelines of individual state highway WikiProjects (please see WP:USRD for a list).

State/Territory/District	Official name	Article title
Alabama	State Route X	Alabama State Route X
Alaska	Alaska Route X	Alaska Route X
American Samoa	American Samoa Highway X	American Samoa Highway X
Arizona	State Route X	Arizona State Route X
Arkansas	Highway X	Arkansas Highway X
California	State Route X	California State Route X
Colorado	State Highway X	Colorado State Highway X
Connecticut	Route X	Connecticut Route X
Delaware	Delaware Route X	Delaware Route X
District of Columbia	District of Columbia Route X	District of Columbia Route X
Florida	State Road X	Florida State Road X
Georgia	State Route X	Georgia State Route X
Guam	Guam Highway X	Guam Highway X
Hawaii	Route X	Hawaii Route X
Idaho	State Highway X	Idaho State Highway X
Illinois	Illinois Route X	Illinois Route X
Indiana	State Road X	Indiana State Road X
Iowa	Iowa Highway X	Iowa Highway X
Kansas	K-X	K-X (Kansas highway)
Kentucky	Kentucky Route X	Kentucky Route X
Louisiana	Louisiana Highway X	Louisiana Highway X
Maine	State Route X	Maine State Route X
Maryland	Maryland Route X	Maryland Route X
Massachusetts	Route X	Massachusetts Route X
Michigan	M-X	M-X (Michigan highway)
Minnesota	Minnesota State Highway X	Minnesota State Highway X
Mississippi	Mississippi Highway X	Mississippi Highway X
Missouri	Route X	Missouri Route X
Montana	Montana Highway X	Montana Highway X
Nebraska	Nebraska Highway X	Nebraska Highway X
Nevada	State Route X	Nevada State Route X
New Hampshire	New Hampshire Route X	New Hampshire Route X
New Jersey	Route X	New Jersey Route X
New Mexico	State Road X	New Mexico State Road X
New York	New York State Route X	New York State Route X
North Carolina	NC X	North Carolina Highway X
North Dakota	North Dakota Highway X	North Dakota Highway X
Northern Mariana Islands	Northern Mariana Islands Highway X	Northern Mariana Islands Highway X
Ohio	State Route X	Ohio State Route X
Oklahoma	State Highway X	Oklahoma State Highway X
Oregon	Oregon Route X	Oregon Route X
Pennsylvania	Pennsylvania Route X	Pennsylvania Route X
Pennsylvania Quadrant	State Route XXXX	State Route XXXX (Y County, Pennsylvania)
Puerto Rico	PR-X	Puerto Rico Highway X
Rhode Island	Route X	Rhode Island Route X
South Carolina	South Carolina Highway X	South Carolina Highway X
South Dakota	Highway X	South Dakota Highway X
Tennessee	State Route X	Tennessee State Route X
Texas	State Highway X	Texas State Highway X
Utah	State Route X	Utah State Route X
U.S. Virgin Islands	U.S. Virgin Islands Highway X	U.S. Virgin Islands Highway X
Vermont	Vermont Route X	Vermont Route X
Virginia	State Route X	Virginia State Route X
Washington	State Route X	Washington State Route X
West Virginia	West Virginia Route X	West Virginia Route X
Wisconsin	Highway X	Wisconsin Highway X
Wyoming	Wyoming Highway X	Wyoming Highway X

The official name is to be used when writing about the road in an article; only use the article title in another article if the sentence would otherwise be ambiguous. Never use a colloquial title other than those listed above, unless you are mentioning that it exists in the article.

Official nicknames for highways (i.e. Golden State Freeway, Tri-State Tollway, New Jersey Turnpike) may be used if the DOT uses it. However, colloquial names such as The Loneliest Road in America should not be used.

Interstate and U.S. Routes

The following are systems of national highways which have their numbering assignments made by the American Association of State Highway and Transportation Officials (AASHTO).

System	Subtype	Official name	Article title
Interstate Highway System	Primary	Interstate X	Interstate X
	Primary, state-detail	Interstate X	Interstate X in State
	Auxiliary	Interstate X	Interstate X Interstate X (State)
	Business loops	Interstate X Business Loop, Business Loop Interstate X	Interstate X Business (City, State)
	Business spurs	Interstate X Business Spur Business Spur Interstate X
United States Numbered Highways	Primary	U.S. Route X	U.S. Route X
	Primary, state-detail	U.S. Route X	U.S. Route X in State
	Alternate routes	U.S. Route X Alternate, Alternate U.S. Route X	U.S. Route X Alternate (Location)
	Business routes	U.S. Route X Business, Business U.S. Route X	U.S. Route X Business (Location)
	Bypass routes	U.S. Route X Bypass, Bypass U.S. Route X	U.S. Route X Bypass (Location)
	Scenic routes	U.S. Route X Scenic, Scenic U.S. Route X	U.S. Route X Scenic (Location)
	Spur routes	U.S. Route X Spur, Spur U.S. Route X	U.S. Route X Spur (Location)
	Truck routes	U.S. Route X Truck, Truck U.S. Route X	U.S. Route X Truck (Location)