Interstate 840 Tennessee
Originally envisioned as a full 187-mile beltway around the metropolitan Nashville area, Interstate 840 connects I-40 near Dickson with I-40 near Lebanon. The beltway was proposed as a solution for regional traffic needs so that the existing Nashville freeways could better support local traffic. Similar to the outer beltway (Grand Parkway / SH 99) around Houston, I-840 forms a complete bypass of the metropolitan area, providing a through route for the movement of goods and services. Critics of the beltway contended that the new road would open up land for unchecked commercial and residential development.
Interstate designation for SR 840 was planned originally, but later withdrawn because funding was derived from Tennessee state sources such as gas and diesel taxes, license plate renewal fees and other highway user fees.1 The route was incorporated into then-governor Lamar Alexander’s 1986 “Bicentennial Parkway” road program.4 An application to AASHTO by TDOT to upgrade the state route to Interstate 840, however, was approved on May 15, 2015.8
Tennessee Department of Transportation (TDOT) received final approval from the Federal Highway Administration to officially designate all of SR 840 as I-840 in August 2016.6 The change in designation will allow further economic growth along the I-840 corridor and encourage more traffic diversion around the central Nashville area. Signage along the corridor was erected starting in mid August 2016. With a $230,000 price tag, sign conversion was to be completed by late 2016.6
TDOT announced that plans for SR 840 north of Interstate 40 were placed on hold indefinitely on October 31, 2003. Lawsuits and complaints from homeowners and environmental groups along the planned corridor, coupled with discussion involving the overall need for the route, led to the cancellation of the project at that time.2 No follow up work has taken place.
The origins of Tennessee 840 date to 1975 with the recommendation for a beltway around Nashville in the 1975-79 Tennessee Highway System Plan.2 By 1986, the route became official under a proposal from Governor Lamar Alexander, and the subsequent approval by the state legislature. The route was also included in the Tennessee Better Roads Program. Planning commenced from there in 1988, culminating with actual construction by 1991. Newspaper reports at the time referred to the beltway as Interstate 840 rather than State Route 840.
In November 1991, the Tennessee Department of Transportation (TDOT) requested that the proposed Interstate 840 be added to the Interstate Highway System. This request was submitted to the Federal Highway Administration (FHWA) in accordance with the provisions of 23 USC § 139(b). In January 1992, however, TDOT withdrew this request, and FHWA returned the Agreement for Interstate Highway Construction in the State of Tennessee without signing it. Interstate 840 then became “SR 840S.”3
Construction progressed on the southern and eastern thirds of the beltway in four stages:
- From Stewart's Ferry Pike near Gladeville to Interstate 40 – open August 1995
- From Interstate 24 in Murfreesboro northeast to Stewart's Ferry Pike – open November 1996
- From U.S. 31A and U.S. 41A near Triune in Williamson County to Interstate 24 – open November 2000
- From Interstate 65 south of Franklin to U.S. 31A/41A – open October 2001
The total length of Tennessee 840 expanded to 47 miles at that point.1,3
In 1993, the General Assembly indicated that TDOT may consider the northern component of the beltway. The department of transportation followed with the release of an environmental impact statement in 1995. By 2003, due to the overall anticipated high costs both economically and socially with the corridor, it was recommended that TDOT withdraw plans to begin work on the northern half of SR 840. Instead attention was to be redirected to the expansion of the existing roadway network north of the city and further study of the northern half of the beltway discontinued.2
East End – Lebanon, TN
West End – Dickson, TN
Mileage – 77.00 (77.28*)
Cities – Spring Hill, Murfreesboro, Lebanon
- Junctions –
Source: Source: December 31, 2017 Interstate Route Log and Finders List
* – Special Committee on U.S. Route Numbering Spring 2015 Report to the Standing Committee on Highways May 14, 2015.
I-840 Annual Average Daily Traffic (AADT)
|Location||Vehicles per day|
|Exits 1 to 7||12,076|
|Exits 7 to 14||17,710|
|Exits 14 to 23||18,012|
|Exits 23 to 28||23,754|
|Exits 28 to 30||20,398|
|Exits 30 to 31||30,302|
|Exits 31 to 34||39,314|
|Exits 34 to 37||24,948|
|Exits 37 to 42||40,962|
|Exits 42 to 47||37,437|
|Exits 47 to 50||41,840|
|Exits 50 to 53||48,934|
|Exits 53 to 55||64,418|
|Exits 55 to 57||34,739|
|Exits 57 to 61||31,439|
|Exits 61 to 64||32,811|
|Exits 64 to 67||40,379|
|Exits 67 to 70||37,311|
|Exits 70 to 72||38,319|
|Exits 72 to 76||20,730|
Source: 2018 Traffic Map – Knox County, Tennessee Department of Transportation
Although funding may never materialize, a freeway stub built at the western exchange of I-40/840 alludes to the proposed northern loop of State Route 840.
The western most portion of SR 840, between I-40 near Burns and SR 100 near Fairview, opened to traffic December 5, 2002.1 This left the section between SR 100 and Interstate 65. Work on this portion began with a 6.1-mile, $44.2-million project between SR 100 and Bending Chestnut Road, just south of SR 46 (Pinewood Road) in July 2007.5 The Williamson County stretch opened following a ribbon cutting ceremony held on October 27, 2010.7
Separate projects focused on completing the 11.94 mile link between Bending Chestnut Road and U.S. 31 (Columbia Pike). $87.3-million in construction from Leipers Creek Road east to U.S. 31 (Columbia Pike) started in January 2009. Work on the freeway west from Leipers Creek Road to Bending Chestnut Road followed in March 2010.5 Governor Bill Haslam led a ribbon cutting ceremony at Burwood by the SR 246 interchange to formally open the road on November 2, 2012. The beltway cost $753 million to build,6 up from the $351 million projected in 1986.2
East End – Lebanon, Tennessee
West End – Dickson, Tennessee
- State Route 840
Tennessee Department of Transportation project web site.
- “TDOT Announces Decision on State Route 840 North.” Tennessee Department of Transportation (TDOT), October 31, 2003.
- Tennessee Department of Transportation 15 Project Case Study: Project Assessment Final Report State Route 840 South. Center for Transportation Research at the University of Tennessee, Knoxville, Tennessee, page 11. August 2003.
- "New Nashville bypass to help Memphis drivers" The Commercial Appeal (Memphis, TN) October 31, 2012.
- "840 complete 26 years after project began." Franklin Home Page, November 2, 2012.
- “Tennessee Adds New 77 Miles of Highway to Interstate System.”
https://tn.gov/tdot/news/44772Tennessee Department of Transportation (TDOT), news release, August 12, 2016.
- "Governor Bredesen Opens New Section of State Route 840." Tennessee Government press release, October 22, 2010.
http://route.transportation.org/Documents/05 14 2015 Cheyenne, WY Report/Revised Application Prop Designation of I-840.pdf
Page updated February 3, 2019.