Interstate 24

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"I-24" redirects here. For the Type C1 submarine of the Japanese Imperial Navy, see Japanese submarine I-24.

Interstate 24 marker

Interstate 24
Route information
Length: 316.36 mi[1] (509.13 km)
Major junctions
West end: I-57 in Pulleys Mill, IL
  I-65 in Nashville, TN
I-40 in Nashville, TN
I‑59 in Wildwood, GA
East end: I-75 in Chattanooga, TN
Highway system

Interstate 24 (I-24) is an Interstate Highway in the Midwestern and Southeastern United States. It runs diagonally from Interstate 57 (10 miles south of Marion, Illinois) to Chattanooga, Tennessee, at Interstate 75.[2] As an even-numbered Interstate, it is signed as an east-west route, though the route follows a more southeast-northwest routing.

Because the routing of I-24 is diagonal, the numbering is a bit unusual as it does not completely follow the Interstate Highway System numbering conventions.

I-24 makes up the majority of a high-traffic corridor between St. Louis, Missouri, and Atlanta. This corridor utilizes Interstate 64 and Interstate 57 northwest of I-24, and Interstate 75 southeast of I-24.

Route description[edit]

  mi km
IL 38.73 62.33
KY 93.37 150.26
TN 180.16 289.94
GA 4.10 6.60
Total[1] 316.36 509.13


In the state of Illinois, Interstate 24 is a remote, four-lane freeway that travels through hilly rural southern Illinois and the Shawnee National Forest. There are only five mainline exits; of those five, four have services. Interstate 24 crosses into Kentucky via the Interstate 24 Bridge from Metropolis, Illinois, to Paducah, Kentucky.


I-24 Bridge connects Illinois with Kentucky across the Ohio River

In the state of Kentucky, Interstate 24 runs from Paducah to the Tennessee border just northwest of Clarksville. Along its route are Kentucky Dam, which forms Kentucky Lake, and Barkley Dam, which forms Lake Barkley, Land Between the Lakes National Recreation Area ("LBL"; under the management of the US Forest Service), and Fort Campbell.

Interstate 69 runs concurrently with Interstate 24 for 17 miles from the Purchase Parkway in Calvert City to the Western Kentucky Parkway in Eddyville. Additionally, the planned Interstate 66 routing is proposed to run concurrent with Interstate 24 in the Eddyville-to-Paducah corridor.


I-65 junction with I-24 in Nashville.

In the state of Tennessee, Interstate 24 runs from Clarksville to Chattanooga by way of Nashville. Just west of Chattanooga, I-24 drops into Georgia for 4 miles (6 km).

One of the most notoriously hazardous stretches of Interstate Highway in the United States is approximately 40 miles (64 km) west of Chattanooga on I-24 in Monteagle, where the highway goes over the Cumberland Plateau. Compared to grades elsewhere, Monteagle's 4- to 6-percent grade does not come close to the steepest highway roads (for example, the Siskiyou Pass along Interstate 5 in Oregon),[3] but the slope is protracted over a distance of several miles.

Interstate 124 is an occasional (currently unsigned) designation of a portion of the US 27 freeway, which runs as a spur into downtown Chattanooga and beyond.[4] Also in Chattanooga is the Ridge Cut, a 0.25 mile (0.40 km) section of Missionary Ridge between the 4th Avenue exit and the Germantown–Belvoir exit.


In the state of Georgia, Interstate 24 runs for 4 miles (6 km), running along the southern flank of Raccoon Mountain and intersecting with Interstate 59 before turning back north to the Tennessee River and around the northern flank of Lookout Mountain. The exits remain numbered according to Tennessee's mileposts. However, the mileposts are Georgia's mileposts.

This segment is also officially State Route 409.

Junction list[edit]

I-57 west-northwest of Pulleys Mill
US 45 southwest of Bloomfield
US 45 in Metropolis
US 60 in Paducah
US 45 / US 62 in Paducah
US 68 southeast of Reidland
I-69 south of Calvert City. The highways travel concurrently to Eddyville.
US 62 in Calvert City
US 62 / US 641 in Kuttawa
US 68 in Cadiz
US 79 in Clarksville
US 431 in Nashville
I-65 in Nashville. The highways travel concurrently through Nashville.
US 431 in Nashville
US 31W / US 431 in Nashville
I-40 in Nashville. The highways travel concurrently through Nashville.
US 41 / US 70S in Nashville
I-440 in Nashville
US 231 in Murfreesboro
US 41 northwest of Manchester
US 41 in Manchester
US 64 southwest of Pelham. The highways travel concurrently to Kimball.
US 64 / US 72 in Kimball
I-59 west of Lookout Mountain
US 41 / US 64 / US 72 in Chattanooga
US 27 in Chattanooga. The highways travel concurrently through Chattanooga.
US 11 / US 41 / US 64 / US 72 in Chattanooga
US 41 / US 76 in Chattanooga
I-75 in Chattanooga

Auxiliary route[edit]

  • Interstate 124 is an unsigned designation for a short segment of US-27 freeway in Chattanooga, Tennessee.


  1. ^ a b Federal Highway Administration (2002-10-31). "FHWA Route Log and Finder List: Table 1". Retrieved 2007-03-28. 
  2. ^ Google (2008-02-15). "overview map of I-24" (Map). Google Maps. Google. Retrieved 2008-02-15. 
  3. ^ "Interstate 5: Interesting Facts". Oregon Department of Transportation. Retrieved 2007-09-26. 
  4. ^ Tennessee Department of Transportation, Fiscal Years 2008-2010 Transportation Improvement Program, May 1, 2007

External links[edit]

Route map: Bing

Browse numbered routes
IL 23 IL US 24
US 23 list US 25