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 near 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
CR 12 (Tunnel Hill Road) southeast of Goreville
US 45 southwest of Bloomfield and northeast of Vienna
IL 146 in Vienna
CR 10 (Big Bay Road) southeast of New Columbia and southwest of Big Bay
US 45 east of Metropolis
KY 305 west of Paducah
US 60 in Paducah
US 45 / US 62 in Paducah, north of Lone Oak
KY 1954 south of Woodlawn-Oakdale
US 68 southeast of Reidland
I-69 / Purchase Parkway south of Calvert City. I-69 travels concurrently with I-24 to near Eddyville. (I-24 42MM)
US 62 in Calvert City
KY 453 northwest of Lake City and Grand Rivers, southeast of Smithland
US 62 / US 641 / KY 93 in New Kuttawa
I-69 / Western Kentucky Parkway south of Eddyville
KY 293 west-southwest of Princeton
KY 139 south of Princeton
US 68 / KY 80 near Cadiz and Cerulean
KY 117 south of Gracey, north of Newstead, and west-southwest of Hopkinsville
Pennyrile Parkway southwest of Hopkinsville
US 41A south of Hopkinsville and north of Fort Campbell
KY 115 northeast of Oak Grove and south-southwest of St. Elmo
SR 48 northeast of Clarksville
US 79 in Clarksville
SR 237 east of Clarksville
SR 76 in Clarksville and north of Sango
SR 256 southwest of Adams
SR 49 in Pleasant View
US 431 north-northeast of Nashville
SR 45 west of Madison
SR 155 (Briley Parkway) southwest of Madison and north of Nashville
I-65 in Nashville. The highways travel concurrently through 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 (October 31, 2002). "Table 1: Main Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways as of October 31, 2002". Route Log and Finder List. Federal Highway Administration. Retrieved March 28, 2007. 
  2. ^ Google (February 15, 2008). "overview map of I-24" (Map). Google Maps. Google. Retrieved February 15, 2008. 
  3. ^ Oregon Department of Transportation. "Interstate 5: Interesting Facts". Oregon Department of Transportation. Retrieved September 26, 2007. 
  4. ^ Tennessee Department of Transportation (May 1, 2007). "Fiscal Years 2008-2010 Transportation Improvement Program". Tennessee Department of Transportation. 

External links[edit]

Route map: Bing / Google

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