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United States Numbered Highways are the components of a national system of highways administered by the American Association of State Highway and Transportation Officials (AASHTO), a nonprofit, nonpartisan association, [3] and the various state departments of transportation.
The U.S. state of Washington has over 7,000 miles (11,000 km) of state highways maintained by the Washington State Department of Transportation (WSDOT). [1] The highway system is defined through acts by the state legislature and is encoded in the Revised Code of Washington as State Routes (SR).
Since Pennsylvania first introduced numbered traffic routes in 1924, a keystone symbol shape has been used, in reference to Pennsylvania being the "Keystone State". The signs originally said "Penna" (a common abbreviation for Pennsylvania at the time), followed by the route number in block-style numbering in a keystone cutout.
PA 318 at Pennsylvania state line in Hubbard Township: 1932: current SR 305: 33.90: 54.56 SR 82/SR 700 in Hiram: PA 718 at Pennsylvania state line in Hartford Township: 1932: current SR 306: 27.41: 44.11 SR 43 in Aurora: SR 283 in Mentor: 1932: current SR 307: 22.99: 37.00 SR 528 in Madison Township: SR 193 in Dorset Township: 1933: current
The routes are separated into primary and secondary routes though. Many of the routes are hidden in that they are overlaid on U.S. Routes and not signed. The mile markers throughout Tennessee, however, show the state route number for these hidden routes. The Tennessee Department of Transportation (TDOT) maintains these routes under the "State ...
In 1918, Wisconsin became the first state to number its highways in the field followed by Michigan the following year. [1] In 1926 the American Association of State Highway Officials (AASHO) established and numbered interstate routes (United States Numbered Highways), selecting the best roads in each state that could be connected to provide a national network of federal highways.
Follows the old route of Route 3 after Route 3 was moved onto a freeway in 1963 Route 56: 20.1: 32.3 Route 12 in Oxford: Route 68 in Rutland — — Route 57: 45.42: 73.10 Route 23 / Route 183 in Monterey: US 5 in Agawam: c. 1930: current Easternmost section of Route 57 is a freeway known as the Henry E. Bodurtha Highway Route 58: 29.86: 48.06
The following is a list of numbered state highways in the U.S. state of New York.Signed state highways in New York, referred to as "touring routes" by the New York State Department of Transportation, are numbered from 1 to 899.