\n"}" id="mwBg">
Tennessee National Guard Parkway | ||||
I-840 highlighted in red | ||||
Route information | ||||
Auxiliary route of I-40 | ||||
Maintained by TDOT | ||||
Length | 77.28 mi [1] (124.37 km) | |||
Existed | August 12, 2016 [2] –present | |||
History | Completed November 2, 2012 (as SR 840) | |||
NHS | Entire route | |||
Major junctions | ||||
West end | ![]() | |||
| ||||
East end | ![]() | |||
Location | ||||
Country | United States | |||
State | Tennessee | |||
Counties | Dickson, Hickman, Williamson, Rutherford, Wilson | |||
Highway system | ||||
|
Interstate 840 (I-840), formerly State Route 840 (SR 840), is a freeway that serves as an outer bypass route around Nashville, Tennessee. Built by the Tennessee Department of Transportation (TDOT), it is also designated as Tennessee National Guard Parkway. [3] At 77.28 miles (124.37 km) long, it is the tenth-longest auxiliary Interstate Highway in the nation. [4] The route serves the cities of Lebanon, Murfreesboro, Franklin, and Dickson, all suburbs of Nashville. [5] [6]
First proposed by former Governor Lamar Alexander as part of a system of Bicentennial Parkways, I-840 was constructed between 1991 and 2012. The highway was originally planned as an Interstate Highway but was constructed entirely with state funds and initially designated as a state route for this reason. [3] In 2015, the Federal Highway Administration (FHWA) and the American Association of State Highway and Transportation Officials (AASHTO) approved TDOT's request to redesignate SR 840 as I-840 as part of its integration into the Interstate Highway System. On August 12, 2016, TDOT announced that the route had officially been redesignated as I-840 and that resigning work would begin. [2]
I-840 begins at an interchange with I-40 in Dickson County southeast of Dickson and Burns. It initially runs southeast through a rural area, passing through a mix of farmland and woodlands characterized by a terrain made up of rolling hills, the eastbound lanes briefly gaining a truck climbing lane. The highway crosses into Hickman County about five miles (8.0 km) later. The route remains in Hickman County for less than 1.5 miles (2.4 km) before crossing into Williamson County and reaching an interchange with SR 100 about one mile (1.6 km) later. I-840 continues through a predominantly rural area over the next five miles (8.0 km), alternating between farmland and woodlands before transitioning into a region characterized by dense woodlands, rolling hills with moderate grades, and several streams and creeks. About two miles (3.2 km) beyond this point, I-840 reaches SR 46 at an interchange near the community of Leiper's Fork. About three miles (4.8 km) later, I-840 crosses the Natchez Trace Parkway and gradually turns east, continuing through similar terrain. After about seven miles (11 km), I-840 passes through flat terrain consisting primarily of farmland and woodlands over the next approximately eight miles (13 km) before briefly entering a suburban area south of Franklin and coming to an interchange with U.S. Route 31 (US 31, Columbia Pike). About two miles (3.2 km) beyond this point is an interchange with US 431 (Lewisburg Pike). Less than one mile (1.6 km) later, I-840 comes to an interchange with I-65 that resembles a combination interchange, containing two loop ramps and two underpass ramps that cross I-840 combined. [5] [6]
After this interchange, I-840 crosses a steep hill and continues through terrain consisting of several rolling hills, some with relatively steep grades, and crosses the Harpeth River about eight miles (13 km) later. Three miles (4.8 km) later, I-840 comes to an interchange with U.S. Route 31 Alternate (US 31A) and US 41A near the community of Triune. About three miles (4.8 km) later, I-840 crosses SR 96 at the top of a large hill and begins a steep downgrade; the westbound lanes utilize a truck climbing lane over a short distance to ascend the hill from the east. It then crosses into Rutherford County, entering a more flat terrain and another suburban area, and, about eight miles (13 km) later, I-840 comes to an interchange with I-24 northwest of Murfreesboro. This interchange is almost a complete cloverleaf, containing three loop ramps and one flyover. The route then turns northeast, traveling through a relatively flat region with little elevation change and interchanges with US 41 and US 70S in a combination interchange about two miles (3.2 km) later. About 0.75 miles (1.21 km) later, I-840 crosses the west fork of the Stones River, gradually turning northwest. About four miles (6.4 km) later, the highway turns sharply northeast and crosses the east fork of the Stones River about one mile (1.6 km) beyond this point. About 1.5 miles (2.4 km) later, I-840 shifts north and, another 1.5 miles (2.4 km) later, crosses the Fall Creek impoundment of J. Percy Priest Lake. A short distance later is an interchange with the western terminus of SR 452 (Bill France Boulevard). I-840 then crosses into Wilson County less than one mile (1.6 km) later and has an interchange with SR 109 about six miles (9.7 km) beyond this point. The route then turns northeast and, about 3.8 miles (6.1 km) later, reaches its eastern terminus with I-40 west of Lebanon. [5] [6]
Location | Dickson–Lebanon |
---|---|
Length | 77.28 mi [1] (124.37 km) |
Existed | 1991–2016 |
The route that is now I-840 had its origins in the 1975 Tennessee Highway System Plan issued by TDOT for the next four years, which first identified the need for an outer beltway around Nashville by 1995. [7] The I-840 project was initiated in 1986 with the passage of the Better Roads Program by the Tennessee General Assembly. [8] This program, which had been proposed and spearheaded by then-governor Lamar Alexander, increased the state's gasoline and diesel taxes to fund six new freeway projects and a backlog of 15 projects that had been labeled as top priorities, as well as other projects. [9] I-840 was the largest of these six freeway projects, dubbed "Bicentennial Parkways", and was initially expected to cost $351 million (equivalent to $828 million in 2023 [10] ). [8] While initially referred to as I-840 in the state plan, [8] the highway was constructed entirely with state transportation funds and was officially designated as a state route. [11] The 1986–1987 state budget contained the initial funding for the project. [3] Planning work began in 1988, and the alignment for the first section was announced in December of that year. [3] Survey and design work began in 1989, [12] and the alignment for the remainder of the route was announced in January 1990. [3] Planners considered using SR 396, a short controlled-access connector between US 31 and I-65 in Spring Hill, for part of I-840, but ultimately chose a location about six miles (9.7 km) to the north. [13] The first contract for construction was awarded on August 2, 1991, [14] and work progressed in stages. [3]
The first section of I-840, located between I-40 in Lebanon and Stewart's Ferry Pike, opened on August 2, 1995. [15] The segment between Stewart's Ferry Pike and I-24 near Murfreesboro was completed on November 21, 1996. [16] [17] On November 30, 2000, the section between I-24 and US 31A/US 41A near Triune was opened. [18] [19] The portion between US 31A/US 41A and US 431 (Lewisburg Pike) near Franklin, including the interchange with I-65, opened on October 18, 2001. [20] [21] The section between I-40 near Dickson and SR 100 opened on December 5, 2002. [22] [23] Due to high costs and environmental concerns, the proposed northern half of I-840 was indefinitely placed on hold in 2003. [3] The short segment between US 431 and US 31 (Columbia Pike) opened to traffic on September 9, 2005. [24] [25]
Construction of the majority of I-840 was met with very little controversy. [11] As work moved into predominantly rural southwestern Williamson County, however, a group of landowners opposed to the route began a movement to stop its construction in 1997. [26] [27] Between the late 1990s and mid-2000s, these landowners, spearheaded by singer-songwriter Gene Cotton, filed complaints and eventually lawsuits in an effort to have TDOT address both environmental and aesthetic issues, considerably slowing work on the segment between SR 100 and US 31. [11] A number of criticisms were also made about TDOT's handling of the construction of the route, such as an accusation that they chose to construct I-840 as a state route to avoid federally required environmental studies. [26] TDOT awarded the first contract for the segment between SR 100 and SR 46 on June 14, 2002, [28] but additional litigation forced TDOT to completely cease work on this segment three months later. [29] As a result of these lawsuits, TDOT chose to slightly modify the design and employ new construction methods on the remaining sections the following year. [3] These changes included construction of bridges over streams feeding the South Harpeth River instead of culverts; multiple wildlife underpasses; and designation of the remaining sections as a scenic highway, which prohibits billboards and uses brown powder-coated guardrail. [11] [3] A proposed interchange at Leiper's Creek Road was also canceled. [30] As part of the redesign, TDOT formed a citizen's resource team, made up of nine local residents who worked with TDOT to select the final designs and alignment of these stretches. [31]
On February 9, 2006, TDOT announced that the realignment of the final segment of I-840 had been chosen and that work on the unfinished sections would proceed. [32] The first contract for construction of the segment between SR 100 and SR 46 was reawarded on June 1, 2007, [33] and construction on I-840 resumed the following month. [34] This segment opened on October 27, 2010. [35] The contract for the segment between Leiper's Creek Road and US 31 was awarded on December 12, 2008, [36] and, on February 19, 2010, TDOT awarded the final construction contract for I-840, the segment between SR 46 and Leiper's Creek Road. [37] These two segments, the final 14.2 miles (22.9 km) of I-840, were opened on November 2, 2012. [3] The project took 26 years to complete and cost $753.4 million (equivalent to $989 million in 2023 [10] ). [11]
TDOT was first authorized to begin studies for a northern loop of I-840 north of Nashville and past Dickson, Clarksville, Springfield, and Gallatin by the state legislature in 1993. [1] Environmental studies began in 1994 and a draft environmental impact statement (DEIS) was released in 1995. [7] On July 12, 1996, TDOT announced their first proposal for the northern section's alignment. [38] [39] Many residents in the predominantly rural and agricultural areas where the route was to pass were initially opposed. [7] An entire circular loop would possibly be about 187 miles (301 km) long, with the northern segment ranging from 86 to 116 miles (138 to 187 km). [7] Other important objections against additional extensions of I-840 include the hilly nature of the terrain north of Nashville (the Highland Rim), which would require huge and costly amounts of excavation, soil relocation, and bridge construction. [1] In addition, the state was experiencing budget problems at the time, which would have further complicated the funding for such a project. [34] On October 31, 2003, TDOT placed the northern loop plan on indefinite hold, citing a lack of documented transportation needs and lack of participation from local politicians. [1] The western terminus of I-840 contains a very short unused extension, constructed in anticipation of the northern segment. [5]
TDOT first submitted a request to the FHWA to redesignate SR 840 as I-840 in November 1991. This was withdrawn two months later after it was chosen to construct the entire route with state funds. [40]
In 2015, TDOT submitted a request to AASHTO to redesignate SR 840 as I-840. Though the application had an error that required TDOT to refile it, AASHTO conditionally approved it and submitted it to the FHWA for their approval. [41] [42] The FHWA approved the change on July 22, 2015, and AASHTO finalized their approval on September 25, 2015. [43] TDOT announced on August 12, 2016, that it would start replacing the signs to change over the designation the week of August 14 and that the project would be completed by the end of the year at a cost of $230,000 (equivalent to $286,000 in 2023 [10] ). [2]
In 2005, the Tennessee General Assembly passed legislation designating I-840 as the "Tennessee National Guard Parkway". [44] Since 2007, the state has named bridges on I-840 in honor of members of the Tennessee National Guard killed in the global War on Terror. [45]
County | Location | mi [46] | km | Exit | Destinations | Notes | ||
---|---|---|---|---|---|---|---|---|
Dickson | | 0.0 | 0.0 | 1 | ![]() | Signed as exits 1A (west) and 1B (east) westbound; I-40 exit 176; stub road westbound | ||
Hickman | No major junctions | |||||||
Williamson | | 7.3 | 11.7 | 7 | ![]() ![]() | |||
14.1 | 22.7 | 14 | ![]() | |||||
Burwood | 22.9 | 36.9 | 23 | ![]() | ||||
Thompson's Station | 28.3 | 45.5 | 28 | ![]() | ||||
30.3 | 48.8 | 30 | ![]() | |||||
31.1 | 50.1 | 31 | ![]() | Signed as exits 31A (south) and 31B (north); I-65 exit 59 | ||||
Peytonsville | 34.9 | 56.2 | 34 | Peytonsville–Trinity Road | ||||
| 37.1 | 59.7 | 37 | Arno Road | ||||
Triune | 41.9 | 67.4 | 42 | ![]() ![]() | ||||
Rutherford | Almaville | 46.9 | 75.5 | 47 | ![]() | |||
Blackman | 50.8 | 81.8 | 50 | Veterans Parkway – Blackman | ||||
Murfreesboro | 53.1 | 85.5 | 53 | ![]() | Signed as exits 53A (east) and 53B (west) westbound; I-24 exit 74 | |||
55.1 | 88.7 | 55 | ![]() ![]() | Signed as exits 55A (south/east) and 55B (north/west) | ||||
| 57.8 | 93.0 | 57 | Sulphur Springs Road | ||||
61.4 | 98.8 | 61 | ![]() | |||||
65.2 | 104.9 | 65 | ![]() | |||||
Wilson | | 67.2 | 108.1 | 67 | Couchville Pike | Exit to Cedars of Lebanon State Park | ||
Gladeville | 70.6 | 113.6 | 70 | Stewarts Ferry Pike – Gladeville | ||||
| 72.0 | 115.9 | 72 | ![]() ![]() ![]() ![]() | Signed as 72A (east) and 72B (west) eastbound | |||
Lebanon | 76.8 | 123.6 | 76 | ![]() | Signed as exits 76A (east) and left 76B (west); I-40 exit 235; | |||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi |
Interstate 24 (I-24) is an Interstate Highway in the Midwestern and Southeastern United States. It runs diagonally from I-57, 10 miles (16 km) south of Marion, Illinois, to Chattanooga, Tennessee, at I-75. It travels through Illinois, Kentucky, Tennessee, and Georgia. As an even-numbered Interstate, it is signed as an east–west route, though the route follows a more southeast–northwest routing, passing through Nashville, Tennessee. The numbering deviates from the standard Interstate Highway System grid, lying further north than its number would indicate west of Nashville. The short segment within Georgia bears the unsigned designation State Route 409 (SR 409).
Interstate 40 (I-40) is a major east–west transcontinental Interstate Highway in the southeastern and southwestern portions of the United States. At a length of 2,556.61 miles (4,114.46 km), it is the third-longest Interstate Highway in the country, after I-90 and I-80. From west to east, it passes through California, Arizona, New Mexico, Texas, Oklahoma, Arkansas, Tennessee, and North Carolina. Its western terminus is at I-15 in Barstow, California, while its eastern terminus is at a concurrency with U.S. Route 117 (US 117) and North Carolina Highway 132 (NC 132) in Wilmington, North Carolina. Major cities served by the interstate include Flagstaff, Arizona; Albuquerque, New Mexico; Amarillo, Texas; Oklahoma City, Oklahoma; Little Rock, Arkansas; Memphis, Nashville, and Knoxville in Tennessee; and Asheville, Winston-Salem, Greensboro, Durham, Raleigh, and Wilmington in North Carolina.
Interstate 640 (I-640) is an east–west auxiliary Interstate Highway in Knoxville, Tennessee. It serves as a bypass for I-40 around Downtown Knoxville and is also an alternative route for traffic passing between I-40 and I-75. All trucks carrying hazardous cargo through Knoxville are required to use I-640. It has a total length of 10.80 miles (17.38 km) and runs approximately three miles (4.8 km) north of downtown through the northern neighborhoods of Knoxville.
State Route 155, mostly designated as Briley Parkway, is a major freeway and parkway beltway around Nashville, Tennessee. It is 35.1 miles (56.5 km) long.
Monteagle Mountain is the local name given to a stretch of Interstate 24 near Monteagle, Tennessee that travels over the Cumberland Plateau. Being part of the plateau, it is not technically a mountain, but appears that way to motorists crossing over it. It is frequently referenced as one of the most treacherous stretches of highway in the United States, especially in inclement weather. It rises to an elevation of around 2,000 feet (600 m), with gradients of 6%.
Interstate 440 (I-440) is an east–west auxiliary Interstate Highway that runs through Nashville, Tennessee. It serves as a southern bypass around downtown Nashville, and is located on average about three miles (4.8 km) from the center of the city. I-440 is also known locally as the Four-Forty Parkway, and is designated as the Debra K. Johnson Memorial Parkway. At a length of 7.64 miles (12.30 km), I-440 runs between I-40 and I-24, and connects to I-65 and multiple U.S. Routes. Combined, I-440 and Briley Parkway, a controlled-access segment of State Route 155 (SR 155), form a noncontiguous inner beltway around downtown Nashville.
The Pellissippi Parkway is a major highway in Knox and Blount counties in the Knoxville metropolitan area in Tennessee that extends 19.75 miles (31.78 km) from State Route 62 at Solway to SR 33 in Alcoa. It provides access to the cities of Oak Ridge and Maryville from Interstates 40 and 75 in the western part of Knoxville and also serves a major corridor that includes Oak Ridge National Laboratory, Y-12 National Security Complex, and a number of science and technology firms. The central portion of the Pellissippi Parkway is included in the Interstate Highway System and is designated Interstate 140 (I-140), while the remainder is designated as State Route 162. The entire highway is part of the National Highway System, a national network of roads identified as important to the national economy, defense, and mobility. It takes its name from an older name for the Clinch River of Native American origin.
Interstate 155 (I-155) is an east–west auxiliary route of Interstate 55 (I-55) that runs through the Bootheel of Missouri and the northwestern corner of Tennessee. It begins south of Hayti, Missouri, at I-55, passes eastward through Caruthersville, and crosses the Mississippi River on the Caruthersville Bridge into Tennessee. The route then proceeds to Dyersburg, Tennessee, where it terminates at U.S. Route 51 (US 51). I-155 is the only road that directly connects Missouri and Tennessee, and is concurrent with US 412 for its entire length.
State Route 396, commonly referred to as Saturn Parkway, is a 4.47-mile-long (7.19 km) east–west primary state route located in the city of Spring Hill in the U.S. state of Tennessee. The entire route is a controlled-access highway, and provides direct access between the General Motors Spring Hill Manufacturing plant and Interstate 65, as well as the business district of Spring Hill. It takes its name from Saturn Corporation, a subsidiary of General Motors that operated the plant from 1990 to 2007 as its sole manufacturing facility.
Interstate 81 (I-81) is part of the Interstate Highway System that runs 855.02 miles (1,376.02 km) northward from Dandridge, Tennessee, to the Thousand Islands Bridge at the Canadian border near Fishers Landing, New York. In Tennessee, I-81 serves the northeastern part of the state, running 75.66 miles (121.76 km) from its southern terminus with I-40 in Dandridge to the Virginia state line in Bristol. The route serves the Tri-Cities region of the state and the eastern parts of the Knoxville metropolitan area, terminating about 35 miles (56 km) east of Knoxville. I-81 bypasses most cities that it serves, instead providing access via interchanges with state and federal routes. It remains in the Ridge-and-Valley topographic region of the Appalachian Mountains for its entire length in Tennessee, and runs in a northeast to southwest direction.
Interstate 55 (I-55) is part of the Interstate Highway System that runs from LaPlace, Louisiana, to Chicago, Illinois. In the state of Tennessee, the Interstate is located entirely within the state's second-largest city of Memphis, running 12.28 miles (19.76 km) from the Mississippi state line in the Whitehaven neighborhood to the Arkansas border across the Mississippi River. Of the six states that the Interstate passes through, the segment in Tennessee is the shortest, as well as the shortest mainline Interstate segment in Tennessee. I-55 serves a number of neighborhoods and industrial areas in the southwestern portion of Memphis, and also provides access to the Memphis International Airport, the second-busiest cargo airport in the world.
Interstate 40 (I-40) is part of the Interstate Highway System that runs 2,556.61 miles (4,114.46 km) from Barstow, California, to Wilmington, North Carolina. The highway crosses Tennessee from west to east, from the Mississippi River at the Arkansas border to the Blue Ridge Mountains at the North Carolina border. At 455.28 miles (732.70 km), the Tennessee segment of I-40 is the longest of the eight states through which it passes and the state's longest Interstate Highway.
Interstate 65 (I-65) is part of the Interstate Highway System that runs 887.30 miles (1,427.97 km) north–south from Mobile, Alabama, to Gary, Indiana. In Tennessee, I-65 traverses the middle portion of the state, running from Ardmore at the Alabama border to the Kentucky border near Portland. The route serves the state capital and largest city of Nashville, along with many of its suburbs. Outside of urban areas, the Interstate bypasses most cities and towns that it serves, instead providing access via state and U.S. Highways. The Interstate passes through the Highland Rim and Nashville Basin physiographic regions of Tennessee, and is often used as the dividing line between the eastern and western portions of the former.
Interstate 69 (I-69) is a proposed Interstate Highway that will pass through the western part of the US state of Tennessee, serving the cities of Union City, Dyersburg, and Memphis. Currently, a 21-mile (34 km) section of already-existing freeway in Memphis has been approved for the I-69 designation while another segment near Union City opened on February 21, 2024, under the temporary designation of Tennessee State Route 690. However, state officials have stated that they will not commit to finishing the interstate in their state until they receive more federal funding.
Interstate 75 (I-75) in the US state of Tennessee runs from Chattanooga to Jellico by way of Knoxville. I-75 enters the East Tennessee region from Georgia, following the Tennessee Valley all the way through Knoxville to near Rocky Top, then climbs into the Cumberland Mountains before crossing over into Kentucky at Jellico.
U.S. Route 23 (US 23) is a part of the United States Numbered Highway System that travels from Jacksonville, Florida, to Mackinaw City, Michigan. In the U.S. state of Tennessee, the highway travels 57.48 miles (92.51 km) in the northeastern part of the state from the North Carolina state line at Sam's Gap in the Bald Mountains to the Virginia state line in Kingsport. The entire route in Tennessee is a four-lane controlled-access highway and is concurrent with Interstate 26 (I-26) for most of its length. The freeway is also designated the James H. Quillen Parkway for its entire length in Tennessee. US 23 in Tennessee is part of Corridor B of the Appalachian Development Highway System (ADHS) and serves as a major thoroughfare in the Tri-Cities region of the state. Although I-26 is technically an east–west route, the highway predominantly travels in a north–south alignment in the state. The highway reaches a maximum elevation of 3,760 feet (1,150 m) at the North Carolina state line, which is the highest elevation on the Interstate Highway System east of the Mississippi River.
In Tennessee, U.S. Route 64 stretches 404.1 miles (650.3 km) from the Mississippi River in Memphis to the North Carolina state line near Ducktown. The highway, along with US 72, is a major route for travel between Memphis and Chattanooga.
State Route 386 (SR 386) is a major east–west state route, signed north-south, located in Davidson and Sumner counties in Tennessee. It is known as Vietnam Veterans Boulevard and serves as a bypass for U.S. Highway 31E and a connector to Hendersonville and Gallatin from Nashville. A majority of the route is a four-lane controlled-access highway.
APD-40 or APD 40 is a road composed of the U.S. Route 64 Bypass and a section of State Route 60 (SR 60) which forms a partial beltway around the business district of Cleveland, Tennessee. The route takes its name from its part of Corridor K of the Appalachian Development Highway System and is sometimes called Appalachian Highway or simply the Cleveland Bypass. The route is also designated as Veterans Memorial Highway. The US 64 Byp. section of the road is multiplexed with unsigned State Route 311 and US 74. The road is a four-lane divided highway its entire length, and parts are controlled-access. The bypass is an east-west route, and the state route runs north-south.