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The State Route System of Tennessee is maintained and developed by the Tennessee Department of Transportation (TDOT) in the U.S. state of Tennessee. Currently the state has of state-maintained roadways, including of Interstate Highway System, Interstate Highways and of State Highways. All of the United States Numbered Highways, U.S. Routes in Tennessee have a state route Concurrency (road), routed concurrently with them, though the state route is hidden and only signed along the green mile marker signs that display mileage within each county. The state route system in Tennessee was established in 1923. Since the 1983 Tennessee state highway renumbering, 1983 renumbering, state routes have been divided into primary and secondary routes with separate shields used for each.
The Tennessee Department of Highways and Public Works was established by the Tennessee General Assembly in 1915 and tasked with constructing, maintaining, and improving roads throughout the state. That year, the Memphis to Bristol Highway, later Tennessee State Route 1, State Route 1, was designated as the first state highway in Tennessee. The Federal Aid Road Act of 1916 required states to establish a highway system in cooperation with the United States Secretary of Agriculture for the purpose of the distribution of federal highway funds. The following year, the department was authorized by the state legislature to establish a state highway system. Both the federal aid system, which consisted of State Routes 1 through U.S. Route 64 in Tennessee, State Route 40, and the state aid system, which consisted of Routes Tennessee State Route 41, 41 through Tennessee State Route 78, 78, were jointly approved on October 1, 1923. This initial system consisted of of federal aid routes, and of state aid highways. When the United States Numbered Highway System was created in 1926, most of the federal aid state routes were assigned a U.S. Route designation as part of this system, but retained their state designations.
Governor Austin Peay, who was elected in 1922 Tennessee gubernatorial election, 1922, made road-building a central issue of his campaign. At the time, Tennessee was known as a "detour state", with many of its roads in poor condition compared to those of neighboring states. In 1924, the state implemented a two-cent gasoline tax for the purpose of improving roads, and throughout the 1920s, the department paved much of the newly-established state route system. As automobile usage increased over the next several decades, additional routes were added to the system. During this time, the state started using suffixed and special routes. Special designations included "-A" for alternate, "-Byp" for bypass, "-Bus" for business routes, "-Conn" and "-Spur" for connector and spur road, spur routes, and "-Temp" for temporary routes. By the time of the creation of the Interstate Highway System in 1956, the system had grown to approximately and roughly 170 numbered highways, including many special routes. Additional thoroughfares that connected to Interstate Highways were designated taken over by the highway department in the years afterwards. In 1972, the Tennessee Department of Highways was renamed the Tennessee Department of Transportation (TDOT).
As traffic continued to increase throughout the state, cities and counties increasingly struggled to properly maintain their major thoroughfares, especially those with connected to Interstate Highways and other major roads. A 1983 study conducted by TDOT also found that a number of important roads were partially maintained by both the state and local governments. To address this problem, in 1983 the Tennessee General Assembly signed legislation allowing the state to assume control of of city and county maintained roads, and made an additional of rural roads eligible for state aid. This legislation was signed into law by Governor Lamar Alexander in May of that year. On July 1, 1983, TDOT took control of these roads, incorporating them into the state route system, and 1983 Tennessee state highway renumbering, renumbered most of their special routes. As part of this process, a new functional classification system was adopted that divided state routes into secondary and primary routes, which was announced to the public in November 1983. This was done in an effort to reduce driver confusion, and new signs were posted throughout 1984 at a cost of $1.3 million (equivalent to $ in ). Secondary routes retained the original inverted triangle marker, with the "Tenn" removed.
Description
State routes in Tennessee are divided into primary and secondary routes, the former being part of the federal-aid primary highway system, and the latter part of the federal-aid secondary highway system. Most routes with primary designations also have secondary designations; very few state routes in Tennessee have only primary designations. Secondary segments of dual-designated routes are often considered primary routes, however. The Tennessee Department of Transportation maintains these routes under the "State Highways" title of state law, but designates them as "State Routes" State routes in Tennessee do not follow a systematic numbering system unlike the U.S. Highway System and some other State highway, states' highway systems. However, routes with similar numberings, especially short and newer secondary routes that were created during the 1983 takeover and renumbering, tend to be located close to each other. Older routes are generally more spread out. Overall, state route numbers have generally been designated sequentially as new routes have been incorporated into the system. Similar to the California postmile system, mile markers for state routes in Tennessee are based on the mileage for each county, and not the entire route. The route's number is displayed in small text at the bottom of each mile marker. State routes that are overlaid on U.S. Routes unsigned highway, are not signed; the route numbers are only displayed on the mile markers.History
The Tennessee Department of Highways and Public Works was established by the Tennessee General Assembly in 1915 and tasked with constructing, maintaining, and improving roads throughout the state. That year, the Memphis to Bristol Highway, later Tennessee State Route 1, State Route 1, was designated as the first state highway in Tennessee. The Federal Aid Road Act of 1916 required states to establish a highway system in cooperation with the United States Secretary of Agriculture for the purpose of the distribution of federal highway funds. The following year, the department was authorized by the state legislature to establish a state highway system. Both the federal aid system, which consisted of State Routes 1 through U.S. Route 64 in Tennessee, State Route 40, and the state aid system, which consisted of Routes Tennessee State Route 41, 41 through Tennessee State Route 78, 78, were jointly approved on October 1, 1923. This initial system consisted of of federal aid routes, and of state aid highways. When the United States Numbered Highway System was created in 1926, most of the federal aid state routes were assigned a U.S. Route designation as part of this system, but retained their state designations.
Governor Austin Peay, who was elected in 1922 Tennessee gubernatorial election, 1922, made road-building a central issue of his campaign. At the time, Tennessee was known as a "detour state", with many of its roads in poor condition compared to those of neighboring states. In 1924, the state implemented a two-cent gasoline tax for the purpose of improving roads, and throughout the 1920s, the department paved much of the newly-established state route system. As automobile usage increased over the next several decades, additional routes were added to the system. During this time, the state started using suffixed and special routes. Special designations included "-A" for alternate, "-Byp" for bypass, "-Bus" for business routes, "-Conn" and "-Spur" for connector and spur road, spur routes, and "-Temp" for temporary routes. By the time of the creation of the Interstate Highway System in 1956, the system had grown to approximately and roughly 170 numbered highways, including many special routes. Additional thoroughfares that connected to Interstate Highways were designated taken over by the highway department in the years afterwards. In 1972, the Tennessee Department of Highways was renamed the Tennessee Department of Transportation (TDOT).
As traffic continued to increase throughout the state, cities and counties increasingly struggled to properly maintain their major thoroughfares, especially those with connected to Interstate Highways and other major roads. A 1983 study conducted by TDOT also found that a number of important roads were partially maintained by both the state and local governments. To address this problem, in 1983 the Tennessee General Assembly signed legislation allowing the state to assume control of of city and county maintained roads, and made an additional of rural roads eligible for state aid. This legislation was signed into law by Governor Lamar Alexander in May of that year. On July 1, 1983, TDOT took control of these roads, incorporating them into the state route system, and 1983 Tennessee state highway renumbering, renumbered most of their special routes. As part of this process, a new functional classification system was adopted that divided state routes into secondary and primary routes, which was announced to the public in November 1983. This was done in an effort to reduce driver confusion, and new signs were posted throughout 1984 at a cost of $1.3 million (equivalent to $ in ). Secondary routes retained the original inverted triangle marker, with the "Tenn" removed.
See also
*Notes
References
{{US numbered highways State highways in Tennessee 1923 establishments in Tennessee