Additional Info


State Tennessee
Mileage 77.00 (77.28*)
Cities Murfreesboro
Junctions I-40, I-65, I-24, I-40
Source: Source: December 31, 2016 Interstate Route Log and Finders List
Interstate 840 Annual Average Daily Traffic

County From: To: AADT Composite
Dickson/ Hickman/
Exit 1/ I-40 Exit 7/ SR 100 8,671
Williamson Exit 28/ U.S. 31 Exit 30/ U.S. 431 18,466
Williamson Exit 30/ U.S. 431 Exit 31/ I-65 24,291
Williamson Exit 31/ I-65 Exit 34/ Peytonsville Rd 25,292
Williamson Exit 34/ Peytonsville Rd Exit 37/ Arno Rd 22,095
Williamson Exit 37/ Arno Rd Exit 42/ U.S. 31A/41A 24,018
Williamson/ Rutherford Exit 42/ U.S. 31A/41A Exit 47/ SR 102 30,469
Rutherford Exit 47/ SR 102 Exit 53/ I-24 30,892
Rutherford Exit 53/ I-24 Exit 55/ U.S. 41/70S 42,452
Rutherford Exit 55/ U.S. 41/70S Exit 57/ Sulphur Springs Rd 26,568
Rutherford Exit 57/ Sulphur Springs Rd Exit 61/ SR 266 24,508
Rutherford Exit 61/ SR 266 Exit 64/ SR 452 26,725
Rutherford/ Wilson Exit 64/ SR 452 Exit 67/ Couchville Pk 26,956
Wilson Exit 67/ Couchville Pk Exit 70/ Stewarts Ferry Pk 24,600
Wilson Exit 70/ Stewarts Ferry Pk Exit 72/ SR 265 29,376
Wilson Exit 72/ SR 265 Exit 76/ I-40 14,336
Source: Traffic Flow Maps - Tennessee Roads and Streets 2013
Aerial image of the west end of then-SR 840.
Although funding may never materialize, a freeway stub built north of Interstate 40 alludes to the envisioned northern loop of Tennessee 840.


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Interstate designation for SR 840 was planned originally, but later withdrawn because funding was derived from Tennessee state sources such as gas and diesel taxes, license plate renewal fees and other highway user fees.1 The route was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

Tennessee 840 map - Interstate-Guide

The projected path of SR 840 north as envisioned by the Tennessee Department of Transportation in 2003 included an overlap with I-40 in the vicinity of Lebanon. The southern half of the beltway was fully completed in 2012 while the northern half was canceled. The entire length of SR 840 was designated as Interstate 840 by August 2016.6

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

Western Terminus - Interstate 40 - east of Pomona, Tennessee
Perspective from Interstate 40 east
Interstate 840 branches southeast from I-40 in a rural area to the southeast of Dickson. Photo taken 06/10/17.
The west end of Interstate 840 consists of a parclo interchange with Interstate 40 (Exit 176). Provisions were built at the exchange for a northern extension. Photo taken 06/10/17.
Exit 176 departs from I-40 east for Interstate 840. I-840 ventures southeast along a scenic and winding course to Duck River Ridge and I-65 between Spring Hill and Franklin. Photo taken 06/10/17.
Perspective from Interstate 40 west
Interstate 840 returns to I-40 westbound, one half mile ahead at Exit 176 near the town of Burns. Photo taken by Carter Buchanan (06/11/17).
Exit 176 loops away from Interstate 40 west for I-840 southeast back toward Franklin. Photo taken by Carter Buchanan (06/11/17).
Perspective from Interstate 840 east
The eastbound beginning of Interstate 840 from I-40 west precedes a loop ramp (Exit 1A) for I-40 east back toward Nashville. This ramp was built in for the unconstructed beltway leading north. Photo taken by Carter Buchanan (06/11/17).
Eastern Terminus - Interstate 40 - west of Lebanon, Tennessee
Perspective from Interstate 840 east
Interstate 840 travels northward on the final approach to I-40 on the outskirts of Lebanon. Photo taken 06/10/17.
Traffic shifts eastward to Exits 76A/B for Interstate 40 by a roadway stub leftover from original plans to extend the I-840 beltway northward. Photo taken 06/10/17.
Interstate 40 heads east through southern reaches of Lebanon en route to Cookesville and Knoxville and west back toward Nashville. Photo taken 06/10/17.
Perspective from Interstate 40 east
Interstate 40 bee lines east through Tucker Gap on the approach to Exit 235 with Interstate 840 west. Photo taken 06/11/17.
Interstate 840 initially curves southwest from I-40 to SR 109 before taking a more southerly trajectory en route to Murphreesboro and I-24. Photo taken 06/11/17.
Perspective from Interstate 40 west
One half mile east of the trumpet interchange (Exit 235) with Interstate 840 along Interstate 40 westbound. Photo taken by Carter Buchanan (06/11/17).
I-840 angles southwest 23 miles to cross paths with I-24 near Murfreesboro. I-40 west enters the city limits of Nashville in 12 miles. Photo taken by Carter Buchanan (06/11/17).


  1. State Route 840
    . Tennessee Department of Transportation project web site.
  2. "TDOT Announces Decision on State Route 840 North." Tennessee Department of Transportation, October 31, 2003.
  3. Tennessee Department of Transportation 15 Project Case Study: Project Assessment Final Report State Route 840 South, by the Center for Transportation Research at the University of Tennessee, Knoxville, Tennessee (Dr. Stephen Richards, Team Leader; Dr. David Middendorf; Dr. Fred Wegmann; Dr. Gregory Reed; Dr. Tom Urbanik; Dr. Mary English; Dr. Arun Chatterjee; Dr. John Tidwell) in August 2003 - page 11.
  4. "New Nashville bypass to help Memphis drivers" The Commercial Appeal (Memphis, TN) October 31, 2012.
  5. "840 complete 26 years after project began." Franklin Home Page, November 2, 2012.
  6. Tennessee Adds New 77 Miles of Highway to Interstate System, Tennessee Department of Transportation web site (news section), August 12, 2016.
  7. "Governor Bredesen Opens New Section of State Route 840." Tennessee Government press release, October 22, 2010.
  8. 14 2015 Cheyenne, WY Report/Revised Application Prop Designation of I-840.pdf

Page Updated October 12, 2017.