The

New York State Department of Transportation The New York State Department of Transportation (NYSDOT) is the department of the New York state government responsible for the development and operation of highways, railroads, mass transit systems, ports, waterways and aviation facilities in ...

(NYSDOT) is responsible for the establishment and classification of a

state highway A state highway, state road, or state route (and the equivalent provincial highway, provincial road, or provincial route) is usually a road that is either ''numbered'' or ''maintained'' by a sub-national state or province. A road numbered by a ...

network which includes

Interstate Highways The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System, is a network of controlled-access highways that forms part of the National Highway System in the United States. Th ...

U.S. Highways 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 h ...

, and state routes. U.S. and Interstate Highways are classified as state routes in New York; however, a letter ("U" or "I", respectively) is suffixed to the number of the route. As a result, there is apparent duplication between U.S. Routes, Interstate Highways and state routes. The New York state highway system is supplemented by the state's county route system, which comprises a series of highways numbered and maintained by the individual county highway departments. While neighboring

New Jersey New Jersey is a state in the Mid-Atlantic and Northeastern regions of the United States. It is bordered on the north and east by the state of New York; on the east, southeast, and south by the Atlantic Ocean; on the west by the Delaware ...

employs a statewide numbering system, no such system exists in New York. Instead, each county numbers its highways independently of other counties. As a result, county routes typically change numbers when they cross county lines. In some cases, the state highway and county highway systems overlap. More specifically, some portions of U.S. Routes and state routes in New York are signed as U.S. Routes or state routes but are maintained by the county that the route lies within. These county-maintained segments also carry a county route designation that may or may not be posted alongside the U.S. or state designation, depending on the signing practices of the county. Some state routes, such as New York State Route 148 in Niagara County, are entirely county-maintained.

History

Lists of routes

Thruway

Highways maintained by the

New York State Thruway Authority The New York State Thruway Authority (NYSTA) is a public benefit corporation in New York State, United States. The NYSTA was formed in 1950 with the responsibility of constructing, maintaining, and operating the New York State Thruway, a syste ...

lack any signed numbers apart from Interstate Highway designations. While the vast majority of the Thruway system is part of the

Interstate Highway System The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System, is a network of controlled-access highways that forms part of the National Highway System in the United States. Th ...

, some sections, such as the Berkshire Connector between Interstate 87 and

Interstate 90 Interstate 90 (I-90) is an east–west transcontinental freeway and the longest Interstate Highway in the United States at . It begins in Seattle, Washington, and travels through the Pacific Northwest, Mountain West, Great Plains, Midwest, and ...

, are unsigned reference routes. There are no standard NYSDOT

reference marker In New York, a reference marker is a small green sign mounted approximately every one-tenth mile on highways maintained by the New York State Department of Transportation. This was initiated in response to the Highway Safety Act of 1966 enacte ...

s on any of the highways; instead, the Thruway Authority posts their own mileposts, which (aside from the mainline) bear special Thruway codes.

External links

New York State Department of Transportation
{{US state highways Numbered Highways

History

Lists of routes

Thruway

See also

External links