U.S. Route 31A (US 31A) is a alternate route of U.S. Route 31 that exists between

Nashville Nashville is the capital city of the U.S. state of Tennessee and the seat of Davidson County. With a population of 689,447 at the 2020 U.S. census, Nashville is the most populous city in the state, 21st most-populous city in the U.S., and the ...

and

Pulaski, Tennessee Pulaski is a city in and the county seat of Giles County, which is located on the central-southern border of Tennessee, United States. The population was 8,397 at the 2020 census. It was named after Casimir Pulaski, a noted Polish-born soldier o ...

. It is located entirely in

Middle Tennessee Middle Tennessee is one of the three Grand Divisions of the U.S. state of Tennessee that composes roughly the central portion of the state. It is delineated according to state law as 41 of the state's 95 counties. Middle Tennessee contains the s ...

and except for the Lewisburg bypass, where it is concurrent with SR 106, it is entirely concurrent with unsigned State Route 11 (SR 11).

Route description

US 31A begins in Giles County in Pulsaki at an intersection with

US 31 U.S. Route 31 or U.S. Highway 31 (US 31) is a major north–south U.S. highway connecting southern Alabama to northern Michigan. Its southern terminus is at an intersection with US 90/ US 98 in Spanish Fort, Alabama. Its ...

( SR 7) just north of downtown. It winds its way northeast through the hilly terrain of the

Highland Rim The Highland Rim is a geographic term for the area in Tennessee surrounding the Central Basin. Nashville is largely surrounded by higher terrain in all directions. Geologically, the Central Basin is a dome. The Highland Rim is a cuesta surround ...

for several miles to cross into Marshall County at an interchange with

I-65 Interstate 65 (I-65) is a major north–south Interstate Highway in the central United States. As with most primary Interstates ending in 5, it is a major crosscountry, north–south route, connecting between the Great Lakes and the Gulf ...

(Exit 22). The highway then passes through the town of Cornersville, where it has a long concurrency with SR 129, before continuing northeast to enter

Nashville Basin The Nashville Basin, also known as the Central Basin, is a term often used to describe the area surrounding Murfreesboro, Tennessee, in which Nashville is located. The Central Basin was caused by an uplifting which produced a dome known as the N ...

and the city of Lewisburg at an intersection with US 31A Business. Here SR 11 splits off and follows US 31A Business through downtown while US 31A follows a bypass route to the east ( SR 106). It passes through neighborhoods before becoming concurrent with SR 272 and passing through a mix business and industrial areas. The highway then becomes concurrent with

US 431 U.S. Route 431 (US 431) is a spur of U.S. Route 31. It currently travels for approximately from US 231/Alabama State Route 210 and US 231 Business (US 231 Bus.) and US 431 Bus. in Dothan, Alabama, to Owensboro, ...

at an intersection with US 431 Business ( SR 50) and they curve to the northwest to cross a bridge over a creek before coming to another intersection with US 31A Business/US 431 Business (SR 11), where US 31A, SR 11, and SR 272 split off and head northeast, with SR 272 splitting off shortly thereafter. US 31A continues northeast through farmland for several miles to pass through the community of

Farmington Farmington may refer to: Places Canada *Farmington, British Columbia * Farmington, Nova Scotia (disambiguation) United States *Farmington, Arkansas *Farmington, California *Farmington, Connecticut *Farmington, Delaware * Farmington, Georgia * ...

, where it has an intersection between SR 64 and SR 271, before crossing the Duck River at

Henry Horton State Park Henry Horton State Park is an American state park located near Chapel Hill, Tennessee. It was constructed in the 1960's on the estate of the former Governor of Tennessee Henry Horton. The park offers various outdoor recreational activities ...

. It then enters the city limits of

Chapel Hill Chapel Hill or Chapelhill may refer to: Places Antarctica * Chapel Hill (Antarctica) Australia *Chapel Hill, Queensland, a suburb of Brisbane *Chapel Hill, South Australia, in the Mount Barker council area Canada * Chapel Hill, Ottawa, a neighbo ...

, where it becomes concurrent with SR 99 and has an intersection with SR 270, before passing through downtown. SR 99 splits off and goes east shortly thereafter and US 31A then leaves Chapel Hill and passes through rural farmland for several miles to cross into Williamson County. US 31A straddles the county line with Rutherford County for several miles, where it passes through the community of Allisona, Tennessee, Allisona and has an intersection with Tennessee State Route 269, SR 269, before re entering Williamson County to pass through the communities of College Grove, Tennessee, College Grove and Kirkland, Williamson County, Tennessee, Kirkland, where it becomes concurrent with U.S. Route 41A in Tennessee, US 41A (Tennessee State Route 16, SR 16) and crosses over the Harpeth River. US 31A/US 41A head north to pass through the community of Triune, Tennessee, Triune, where they have an interchange with Interstate 840 (Tennessee), I-840 (Exit 42) and have an intersection with Tennessee State Route 96, SR 96, before passing through some hills to pass through the town of Nolensville, Tennessee, Nolensville and cross into Davidson County, Tennessee, Davidson County. The highway immediately enters the

city limits and passes northwest through suburban areas for several miles as Nolensville Pike, where it has intersections with Tennessee State Route 253, SR 253 (Concord R, Tennessee State Route 254, SR 254 (Old Hickory Boulevard), Tennessee State Route 255, SR 255 (Harding Place), and Tennessee State Route 155, SR 155 (Thompson Lane), as well as crossing over Mill Creek (Davidson County, Tennessee), Mill Creek and Sevenmile Creek (Tennessee), Sevenmile Creek. US 31A/US 41A then begin passing through business districts as it has an interchange with Interstate 440 (Tennessee), I-440 (Four-Forty Parkway; Exit 6) before the highway splits into a one-way pair between 4th Avenue S and 2nd Avenue S. They then become concurrent with U.S. Route 41 in Tennessee, US 41/U.S. Route 70S, US 70S (Tennessee State Route 1, SR 1/Lafayette Street) at an interchange with Interstate 40 in Tennessee, I-40 (Exit 210C). They turn west for a short distance before US 31A comes to an end at an roundabout with US 31 (Tennessee State Route 6, SR 6/8th Avenue S).

Major intersections

Lewisburg business route

U.S. Route 31A Business (US 31A Business or US 31A Bus) is a Business route of U.S. Route 31A (Tennessee), U.S. Route 31A in Lewisburg, Tennessee, following US 31A’s original alignment through downtown. It is concurrent with unsigned State Route 11 (SR 11) for its entire length. US 31A Bus begins at an intersection with US 31A (Cornersville Highway/S Ellington Parkway/SR 11/ SR 106) at the southern edge of the city. It heads north along S 2nd Avenue to pass through neighborhoods for approximately two miles, where it crosses a bridge over a creek, before crossing under a railroad overpass to enter downtown. US 31A Bus then comes to an intersection with U.S. Route 431 Business (Lewisburg, Tennessee), US 431 Bus ( SR 50/E Commerce Street) and Tennessee State Route 373, SR 373 (W Commerce Avenue), where US 31A Bus becomes concurrent with US 431 Bus/SR 50 and they traverse a roundabout around the Marshall County, Tennessee, Marshall County Courthouse before heading north along N 2nd Avenue. They pass by some more businesses before SR 50 splits off and heads northwest along College Street and Franklin Avenue. US 31A Bus/US 41A Bus turn northeast along Verona Avenue and pass through some neighborhoods before they come to an end at an intersection with US 31A/

/ SR 106/ SR 272 (N Ellington Parkway/Nashville Highway).

References

{{reflist U.S. Route 31, A Special routes of the United States Numbered Highway System, 31A U.S. Highways in Tennessee, 31A Transportation in Giles County, Tennessee Transportation in Marshall County, Tennessee Transportation in Williamson County, Tennessee Transportation in Rutherford County, Tennessee Transportation in Davidson County, Tennessee Transportation in Nashville, Tennessee