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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 14,150 miles (22,770 km) of state-maintained roadways, including 1,233 miles (1,984 km) of Interstate Highways and 13,077 miles (21,045 km) of State Highways. [2]
Reassurance shield incorrectly showing SR 25 as a secondary highway in Cross Plains (Image taken February 2021) SR 25 begins as a secondary highway in Robertson County in Barren Plains at an intersection with SR 161, and goes east to an intersection with US 431/SR 65 just north of Springfield.
Until the 2000s, SR 461 was signed as SR 49. [4] Although the road south of the LBL boundary became designated as SR 461 after the USDA Forest Service took over ownership of LBL, some road maps still identify the entire Tennessee section of the trace as SR 49.
I-81 is maintained by the Tennessee Department of Transportation (TDOT), along with all other Interstate, US, and state highways in Tennessee. In 2022, annual average daily traffic (AADT) volumes ranged from 61,299 vehicles per day at the southern terminus to 34,896 vehicles per day between US 25E and SR 160. [4]
The triangle marker design was the only design until November 1983, when Tennessee divided its routes into primary routes and secondary or "arterial" routes with the adoption of a functional classification system, creating a primary marker and making the triangle marker the secondary marker; primary marker signs were posted in 1984. [2]
In 1972, due to its expanding role in all modes of transportation, it was renamed the Tennessee Department of Transportation. In the 1980s, TDOT began the $3.3 billion Better Roads Program to clear a backlog of projects and improve aging roads. In 1989, the gas tax was set at 21.40 cents per gallon to help fund this project.
I-65 is maintained by the Tennessee Department of Transportation (TDOT), along with all other Interstate, US, and state highways in Tennessee. In 2022, annual average daily traffic (AADT) counts ranged from 18,886 vehicles per day at the Alabama state line (which is one of the lowest traffic volumes on any mainline Interstate Highway in Tennessee) to 177,202 vehicles per day on the concurrent ...
Both phases of SmartFix 40 won an America's Transportation Award from the American Association of State Highway and Transportation Officials in 2008 and 2010, respectively. [ 62 ] [ 63 ] At a cost of $203.7 million (equivalent to $281 million in 2023 [ 48 ] ), SmartFix 40 was at the time the largest project ever undertaken by TDOT, and the ...