View source for Interstate 20

{{Short description|Interstate in southern US}}
{{Use mdy dates|date=February 2023}}
{{Use American English|date=February 2023}}
{{Infobox road
| country = USA
| type = I
| route = 20
| map = {{maplink|frame=yes|plain=yes|frame-align=center|frame-width=290|type=line|from=Interstate 20.map}}
| map_custom = yes
| length_mi = 1539.38
| length_ref = <ref name="fhwa">{{cite web |last=Starks |first=Edward |date=January 27, 2022 |title=Table 1: Main Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways |url=https://www.fhwa.dot.gov/planning/national_highway_system/interstate_highway_system/routefinder/table01.cfm |access-date=February 17, 2023 |work=FHWA Route Log and Finder List |publisher=[[Federal Highway Administration]]}}</ref>
| established = 1957
| direction_a = West
| terminus_a = {{Jct|country=USA|I|10}} in [[Reeves County, Texas|Reeves County, TX]]
| junction = 
*{{Jct|country=USA|I|30}} in [[Aledo, Texas|Aledo, TX]]
*{{Jct|country=USA|I|35W|dab1=Texas}} in [[Fort Worth, Texas|Fort Worth, TX]]
*{{Jct|country=USA|I|35E|dab1=Texas}} in [[Dallas, Texas|Dallas, TX]]
*{{Jct|country=USA|I|45}} in Dallas, TX
*{{Jct|country=USA|I|49}} in [[Shreveport, Louisiana|Shreveport, LA]]
*{{Jct|country=USA|I|55}} in [[Jackson, Mississippi|Jackson, MS]]
*{{Jct|country=USA|I|59}} from [[Meridian, Mississippi|Meridian, MS]] to [[Birmingham, Alabama|Birmingham, AL]]
*{{Jct|country=USA|I|65}} in Birmingham, AL
*{{Jct|country=USA|I|75|I|85}} in [[Atlanta|Atlanta, GA]]
*{{Jct|country=USA|I|77}} in [[Columbia, South Carolina|Columbia, SC]]
| direction_b = East
| terminus_b = {{Jct|country=USA|I|95|BS|20|dab2=Florence, South Carolina}} in [[Florence, South Carolina|Florence, SC]]
| states = [[Texas]], [[Louisiana]], [[Mississippi]], [[Alabama]], [[Georgia (U.S. state)|Georgia]], [[South Carolina]]
}}
'''Interstate&nbsp;20''' ('''I‑20''') is a major east–west [[Interstate Highway]] in the [[Southern United States]]. I-20 runs {{Convert|1539|mi|km}} beginning at an interchange with [[Interstate 10|I-10]] in [[Reeves County, Texas]], {{convert|40|mi|km}} east of [[Van Horn, Texas]], and ending at an interchange with [[Interstate 95|I-95]] in [[Florence, South Carolina]]. Between Texas and South Carolina, I-20 runs through northern Louisiana, Mississippi, Alabama, and Georgia. The major cities that I-20 connects to include [[Dallas-Fort Worth, Texas]]; [[Shreveport, Louisiana]]; [[Jackson, Mississippi]]; [[Birmingham, Alabama]]; [[Atlanta, Georgia]]; and [[Columbia, South Carolina]].

From its terminus at I-95, the highway continues about {{Convert|2|mi|km|spell=in}} eastward into the city of Florence as [[Interstate 20 Business (Florence, South Carolina)|I-20 Business]] (I-20 Bus.).

==Route description==
{{lengths table|length_ref=<ref name=fhwa />}}
|-
|[[Interstate 20 in Texas|TX]]
|{{convert|636.08|mi|km|disp=table}}
|-
|[[Interstate 20 in Louisiana|LA]]
|{{convert|189.87|mi|km|disp=table}}
|-
|[[Interstate 20 in Mississippi|MS]]
|{{convert|154.61|mi|km|disp=table}}
|-
|[[Interstate 20 in Alabama|AL]]
|{{convert|214.70|mi|km|disp=table}}
|-
|[[Interstate 20 in Georgia|GA]]
|{{convert|202.61|mi|km|disp=table}}
|-
|[[Interstate 20 in South Carolina|SC]]
|{{convert|141.51|mi|km|disp=table}}
|-
|Total
|{{convert|1539.38|mi|km|disp=table}}
|}
{{multiple image
| direction         = vertical
| width             = 250
| image1            = FTWORTHTX3224.JPG
| caption1          = I-20 in southern Fort Worth, Texas
| image2            = Welcometomississippi i-20.jpg
| caption2          = The Mississippi welcome sign along westbound I-20
| image3            = I20I59Birmingham.JPG
| caption3          = I-20 (cosigned with I-59) approaching I-65 in downtown Birmingham, Alabama, at the interchange that is sometimes referred to as Malfunction Junction
| image4            = Augusta Georgia I-20 at I-520 flyover ramp construction.jpg
| caption4          = I-20 eastbound at the I-520 interchange in Augusta, Georgia
| image5            = Northbound Interstate 95 @ Interstate 20; Florence SC.jpg
| caption5          = Approaching the eastern terminus of I-20 on I-95, Florence, South Carolina
}}

I-20 runs from Texas to South Carolina serving major southern economic hubs such as [[Dallas–Fort Worth]] and [[Atlanta]].<ref name="Google">{{google maps |url=https://maps.google.com/maps?f=d&hl=en&geocode=9823043144323157679,31.094000,-104.049870%3B15883297316566579360,34.193215,-79.844145&saddr=I-20+E+%4031.094000,+-104.049870&daddr=33.498461,-86.903229+to:I-20+E%2FI-20-SPUR+E+%4034.193215,+-79.844145&mra=dpe&mrcr=0&mrsp=1&sz=11&via=1&sll=33.448058,-86.810532&sspn=0.258963,0.461426&ie=UTF8&ll=32.805745,-92.856445&spn=16.660668,29.53125&z=5 |title=Overview map of I‑20 |access-date=2008-02-15}}</ref>

===Texas===
{{main|Interstate 20 in Texas}}

I-20 begins in western [[Reeves County, Texas|Reeves County]] at a fork with I-10. From there, the highway travels east-northeastward through [[Odessa, Texas|Odessa]], [[Midland, Texas|Midland]], and [[Abilene, Texas|Abilene]] before turning eastward toward the [[Dallas–Fort Worth metroplex]]. The [[La Entrada al Pacífico]] corridor runs along I-20 between [[U.S. Route 385|US Route&nbsp;385]] (US&nbsp;385) and [[Farm to Market Road 1788]] (FM&nbsp;1788). Between [[Monahans, Texas|Monahans]] and I-10, I-20 has an {{convert|80|mph|km/h|adj=on}} speed limit.

From the highway's opening in the 1960s through 1977, I-20 originally went through the heart of the metroplex via the [[Dallas–Fort Worth Turnpike]]. This old route is now signed [[Interstate 30|I-30]] (Dallas–Fort Worth Turnpike and from US&nbsp;80/I-30 intersection at Mesquite to [[Downtown Dallas]]), [[U.S. Route 80|US&nbsp;80]] (former stretch between I-635 and [[Terrell, Texas|Terrell]]), and [[Texas State Highway Spur 557|Spur&nbsp;557]] (bypass around Terrell). In 1977, I-20 was rerouted to go through the southern sections of Fort Worth, [[Arlington, Texas|Arlington]], [[Grand Prairie, Texas|Grand Prairie]], [[Dallas]], and [[Mesquite, Texas|Mesquite]]. It split off from the old route initially at I-820 in west Fort Worth the later on at its current junction near [[Aledo, Texas|Aledo]] in [[Parker County, Texas|Parker County]]. It rejoins the old route near Terrell. Part of I-20 in Dallas used to be signed as I-635 and shares the Lyndon B. Johnson Freeway name with the remainder of I-635. Parts on the south side of Fort Worth were originally signed as I-820.<ref>{{Cite map|url=http://dallasfreeways.com/dfwfreeways/old-highway-maps/1973_exxon_dfw_west_large.jpg|title=Dallas–Fort Worth metroplex|publisher=[[Exxon]]}}</ref>

I-20 continues eastward from Terrell, bypassing [[Tyler, Texas|Tyler]], [[Longview, Texas|Longview]], and [[Marshall, Texas|Marshall]] before crossing the Louisiana border near Waskom.

===Louisiana===
{{main|Interstate 20 in Louisiana}}

In [[Louisiana]], I-20 roughly parallels [[U.S. Route 80 in Louisiana|US&nbsp;80]] through the northern part of the state.

Entering the state from near [[Waskom, Texas]], the highway immediately enters the [[Shreveport–Bossier City metropolitan area]], intersecting [[Interstate 49|I-49]] near downtown Shreveport and passing close to [[Barksdale Air Force Base]] in Bossier City.

I-20 traverses mainly rural, hilly terrain, bypassing [[Minden, Louisiana|Minden]], [[Grambling, Louisiana|Grambling]], and [[Ruston, Louisiana|Ruston]] before reaching [[Monroe, Louisiana|Monroe]].

From Monroe, I-20 enters flatter terrain as it approaches the [[Mississippi River]]. Before crossing the Mississippi, the highway passes [[Tallulah, Louisiana|Tallulah]]. At the Mississippi River, I-20 leaves Louisiana and enters [[Vicksburg, Mississippi|Vicksburg]].

===Mississippi===
{{main|Interstate 20 in Mississippi}}

Upon entering Mississippi by crossing the [[Mississippi River]], I-20 immediately enters [[Vicksburg, Mississippi|Vicksburg]]. Between Edwards and [[Clinton, Mississippi|Clinton]], the highway mostly follows the original two-lane routing of [[U.S. Route 80|US&nbsp;80]]. In Jackson, I-20 sees a short concurrency with both [[Interstate 55|I-55]] and [[U.S. Route 49|US&nbsp;49]]. Also in Jackson is an unusually expansive [[stack interchange]], at the [[Interchange (road)|junction]] of I-20, I-55 north, and US&nbsp;49 south. The interchange replaces a former directional interchange at I-55 north and a [[cloverleaf interchange]] at US&nbsp;49. From the stack, I-20 continues eastward to [[Meridian, Mississippi|Meridian]], where it begins the nearly {{convert|160|mi|km|adj=on}} overlap with [[Interstate 59|I-59]].

The route of the Mississippi section of I-20 is defined in Mississippi Code § 65-3-3.

===Alabama===
{{main|Interstate 20 in Alabama}}

I-20 (along with I-59) crosses the Alabama state line near [[York, Alabama|York]], and it stays conjoined as it passes through western Alabama and [[Tuscaloosa, Alabama|Tuscaloosa]]. At [[Birmingham, Alabama|Birmingham]], the two highways pass through downtown together before splitting at exit&nbsp;130 just east of [[Birmingham–Shuttlesworth International Airport]]. I-20 continues eastward through [[Oxford, Alabama|Oxford]]–[[Anniston, Alabama|Anniston]] and the [[Talladega National Forest]], passing by [[Talladega Superspeedway]] in the process, which is visible from the highway.

Also in Birmingham, the intersection of I-20/I-59 and [[Interstate 65|I-65]] was known as a [[Malfunction Junction (disambiguation)|Malfunction Junction]] because of the interchange's somewhat-confusing design, and the number of traffic accidents that occurred there. This section of the Interstate and its interchanges have since been reconfigured.<ref>{{Cite web|url=https://www.al.com/news/birmingham/index.ssf/2017/11/birmingham_malfunction_junctio.html|title = Malfunction Junction: What are those massive columns?|date = 3 November 2017}}</ref><ref>{{Cite web|url=https://www.al.com/news/index.ssf/2018/04/dysfunction_at_malfunction_jun.html|title = What went wrong on Malfunction Junction? What's next?|date = 10 April 2018}}</ref>

===Georgia===
{{main|Interstate 20 in Georgia}}

I-20 enters Georgia near [[Tallapoosa, Georgia|Tallapoosa]] and after passing through western Georgia, it enters the [[Atlanta metropolitan area]]. On clear days, eastbound motorists get their first view of [[Downtown Atlanta]] as they come over the top of Six Flags Hill. The [[Six Flags Over Georgia]] amusement park is easily visible off exit&nbsp;46 eastbound. The highway then passes through the center of [[Atlanta]], meeting with [[Interstate 75|I-75]] and [[Interstate 85|I-85]], which share a common expressway (the [[Downtown Connector]]). It continues through the Atlanta metropolitan area eastward and through the eastern half of Georgia until it exits the state, crossing the [[Savannah River]] at [[Augusta, Georgia|Augusta]].

Throughout the state, I-20 is conjoined with unsigned [[Georgia State Route 402|State Route&nbsp;402]] (SR&nbsp;402). Also, I-20 from the Alabama state line to [[Interstate 285 (Georgia)|I-285]] in Atlanta is named the "Tom Murphy Freeway", but it is called the "Ralph David Abernathy Freeway" within I-285. The Interstate Highway is also named the Purple Heart Highway from I-285 in [[DeKalb County, Georgia|DeKalb County]] to [[U.S. Route 129|US&nbsp;129]]/[[U.S. Route 441|US&nbsp;441]]/[[Georgia State Route 24|SR&nbsp;24]] in [[Madison, Georgia]], and it is called the Carl Sanders Highway from US&nbsp;129/US&nbsp;441/SR&nbsp;24 to the South Carolina state line.

===South Carolina===
{{main|Interstate 20 in South Carolina}}

Upon leaving Augusta, I-20 crosses the [[Savannah River]] and enters the Palmetto State and heads northeastward, bypassing [[Aiken, South Carolina|Aiken]] and [[Lexington, South Carolina|Lexington]] before reaching the state capital of [[Columbia, South Carolina|Columbia]], which can be reached most directly by taking [[Interstate 26|I-26]] east at exit&nbsp;64 ("Malfunction Junction"), then, almost immediately, [[Interstate 126|I-126]]/[[U.S. Route 76|US&nbsp;76]].

At Columbia, I-20 bypasses the city to the north and again turns northeastward, bypassing [[Fort Jackson (South Carolina)|Fort Jackson]] and [[Camden, South Carolina|Camden]]. After crossing the [[Wateree River]], it turns due east and passes by tiny [[Bishopville, South Carolina|Bishopville]], before reaching the [[Florence, South Carolina|Florence]] area. It is near Florence where I-20 sees its eastern terminus at [[Interstate 95|I-95]]. However, for about {{Convert|2|mi|km|spell=in}}, the highway continues into Florence as [[Interstate 20 Business (Florence, South Carolina)|I-20 Bus.]]

I-20 in the Palmetto State is known as either the J. Strom Thurmond Freeway or John C. West Freeway. The first section to be completed was the [[bridge]] over the Savannah River in 1965; the last, the section between [[U.S. Route 401|US&nbsp;401]] and I-95 (including the business spur), opened in August&nbsp;1975.

==History==
{{Expand section|date=July 2016}}
I-20 was built in 1957 connecting Texas to the east coast running through Shreveport, Ruston, and Monroe making it their first Interstate.{{citation needed|date=August 2019}}

I-20's exit numbers in Georgia were changed in 2000.<ref>{{cite web|title=Interstate exit signs to get new numbers in Georgia|url=http://jacksonville.com/tu-online/stories/120199/met_1394766.html|website=Jacksonville.com|access-date=17 January 2015|archive-date=August 8, 2017|archive-url=https://web.archive.org/web/20170808033011/http://jacksonville.com/tu-online/stories/120199/met_1394766.html|url-status=dead}}</ref>

In 2003, the [[North Carolina Department of Transportation]] proposed extending I-20 eastward from Florence to [[Wilmington, North Carolina|Wilmington]] at the behest of North Carolina Governor [[Mike Easley]] and his 'Strategic Transportation Plan' for the southeast portion of the state.<ref name="malme">{{cite web|author=Robert Malme|url=http://web.duke.edu/~rmalme/i74seg18.html#i20nc|title=Interstate 20 in North Carolina?|work=I-73/I-74 in North Carolina|access-date=2009-07-07|archive-date=2012-02-25|archive-url=https://web.archive.org/web/20120225103907/http://web.duke.edu/~rmalme/i74seg18.html#i20nc|url-status=dead}}</ref><ref>{{cite web|publisher=NCDOT|url=http://www.ncdot.org/doh/PRECONSTRUCT/tpb/shc/documents/#SHC|title=Strategic Highway Corridors|access-date=2009-07-07|archive-date=2012-02-22|archive-url=https://web.archive.org/web/20120222060919/http://www.ncdot.org/doh/PRECONSTRUCT/tpb/shc/documents/#SHC|url-status=dead}}</ref> The proposed route would follow US&nbsp;76 east from Florence to [[Whiteville, North Carolina]], then parallel [[U.S. Route 74|US&nbsp;74]]/US&nbsp;76 into Wilmington.<ref>{{cite web|publisher=NCDOT|url=http://www.ncdot.org/doh/PRECONSTRUCT/tpb/shc/PDF/SHC_Vision_Plan.pdf |archive-url=https://ghostarchive.org/archive/20221009/http://www.ncdot.org/doh/PRECONSTRUCT/tpb/shc/PDF/SHC_Vision_Plan.pdf |archive-date=2022-10-09 |url-status=live|title=Strategic Highway Corridors Vision Plan|date=2008-07-10|work=Strategic Highway Corridors|access-date=2009-07-07}}</ref> Part of this route is already designated the future eastern extension of [[Interstate 74|I-74]]. As part of the 2005 [[Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users]] transportation legislation, North Carolina received $5&nbsp;million (equivalent to ${{Formatprice|{{inflation|US-GDP|5000000|2005}}}} in {{Inflation/year|index=US-GDP}}{{Inflation/fn|index=US-GDP}}) for a feasibility study for this extension.<ref name="malme"/> While this extension has considerable support among towns in southeastern North Carolina, the [[South Carolina Department of Transportation]] has stated that they have no interest in upgrading their portion of US&nbsp;76 to an Interstate. Instead, South Carolina is concentrating their efforts on plans to build [[Interstate 73|I-73]] that will terminate near [[Myrtle Beach, South Carolina|Myrtle Beach]]. This proposed extension is currently unfunded.<ref>{{cite web|publisher=NCDOT|url=http://www.ncdot.org/doh/PRECONSTRUCT/tpb/shc/PDF/SHC_Vision_Plan_Southeastern_NC.pdf |archive-url=https://ghostarchive.org/archive/20221009/http://www.ncdot.org/doh/PRECONSTRUCT/tpb/shc/PDF/SHC_Vision_Plan_Southeastern_NC.pdf |archive-date=2022-10-09 |url-status=live|title=Strategic Highway Corridors Vision Plan, Southeastern NC|date=2004-09-02|work=Strategic Highway Corridors|access-date=2009-07-07}}</ref>

==Junction list==
;Texas
: {{jct|country=USA|I|10}} in [[Reeves County, Texas|Reeves County]]
: {{jct|country=USA|US|285}} in [[Pecos, Texas|Pecos]]
: {{jct|country=USA|US|385}} in [[Odessa, Texas|Odessa]]
: {{jct|country=USA|US|87}} in [[Big Spring, Texas|Big Spring]]
: {{jct|country=USA|US|84}} east of [[Roscoe, Texas|Roscoe]]. The highways travel concurrently to the [[Tye, Texas|Tye]]–[[Abilene, Texas|Abilene]] city line.
: {{jct|country=USA|US|83|US|277}} in Abilene
: {{jct|country=USA|US|283}} in [[Baird, Texas|Baird]]
: {{jct|country=USA|US|183}} in [[Cisco, Texas|Cisco]]
: {{jct|country=USA|US|281}} south-southeast of [[Brazos, Texas|Brazos]]
: {{jct|country=USA|US|180}} in [[Hudson Oaks, Texas|Hudson Oaks]]
: {{jct|country=USA|I|30}} northeast of [[Aledo, Texas|Aledo]]
: {{jct|country=USA|I|820}} in [[Fort Worth, Texas|Fort Worth]]
: {{Jct|state=TX|Toll|CTP}} in Fort Worth 
: {{jct|country=USA|US|377}} in [[Benbrook, Texas|Benbrook]]
: {{jct|country=USA|I|35W|dab1=Texas}} in Fort Worth
: {{jct|country=USA|I|820|US|287}} in Fort Worth. I-20/US&nbsp;287 travels concurrently to [[Arlington, Texas|Arlington]].
: {{jct|state=TX|Toll|PGBT}} in [[Grand Prairie, Texas|Grand Prairie]]
: {{jct|country=USA|US|67}} in [[Dallas]]
: {{jct|country=USA|I|35E|dab1=Texas}} on the Dallas–[[Lancaster, Texas|Lancaster]] city line
: {{jct|country=USA|I|45}} on the Dallas–[[Hutchins, Texas|Hutchins]] city line
: {{jct|country=USA|US|175}} on the Dallas–[[Balch Springs, Texas|Balch Springs]] city line
: {{jct|country=USA|I|635|dab1=Texas}} in Balch Springs
: {{jct|country=USA|US|69}} in [[Lindale, Texas|Lindale]]
: {{jct|country=USA|US|271}} south-southeast of [[Winona, Texas|Winona]]
: {{jct|country=USA|US|259}} northeast of [[Kilgore, Texas|Kilgore]]. The highways travel concurrently to [[Longview, Texas|Longview]].
: {{jct|country=USA|Future|369|US|59|dab1=Texas}} in [[Marshall, Texas|Marshall]]
: {{jct|country=USA|US|80}} west-southwest of [[Jonesville, Texas|Jonesville]]. The highways travel concurrently to west of [[Waskom, Texas|Waskom]].
;Louisiana
: {{jct|country=USA|US|79|US|80}} in [[Greenwood, Louisiana|Greenwood]]
: {{jct|country=USA|US|80}} in [[Shreveport, Louisiana|Shreveport]]
: {{jct|country=USA|I|220|dab1=Louisiana}} in Shreveport
: {{jct|country=USA|US|171}} in Shreveport
: {{jct|country=USA|US|79|US|80}} in Shreveport
: {{jct|country=USA|I|49}} in Shreveport
: {{jct|country=USA|US|71}} in Shreveport. The highways travel concurrently to [[Bossier City, Louisiana|Bossier City]].
: {{jct|country=USA|I|220|dab1=Louisiana}} in Bossier City
: {{jct|country=USA|Future|69}} near [[Haughton, Louisiana|Haughton]]
: {{jct|country=USA|US|371}} in [[Dixie Inn, Louisiana|Dixie Inn]]. The highways travel concurrently to [[Minden, Louisiana|Minden]].
: {{jct|country=USA|US|80}} southeast of Minden
: {{jct|country=USA|US|63|US|167}} in [[Ruston, Louisiana|Ruston]]
: {{jct|country=USA|US|80}} east-northeast of [[Calhoun, Louisiana|Calhoun]]
: {{jct|country=USA|US|165}} in [[Monroe, Louisiana|Monroe]]
: {{jct|country=USA|US|425}} in [[Rayville, Louisiana|Rayville]]
: {{jct|country=USA|US|65}} in [[Tallulah, Louisiana|Tallulah]]
: {{jct|country=USA|US|80}} in [[Delta, Louisiana|Delta]]. The highways travel concurrently to [[Clinton, Mississippi]].
;Mississippi
: {{jct|country=USA|US|61}} in [[Vicksburg, Mississippi|Vicksburg]]. The highways travel concurrently through Vicksburg.
: {{jct|country=USA|I|220|dab1=Mississippi|US|49}} in [[Jackson, Mississippi|Jackson]]. I-20/US&nbsp;49 travels concurrently to [[Pearl, Mississippi|Pearl]].
: {{jct|country=USA|I|55|US|51}} in Jackson. I-20/I-55 travels concurrently to [[Richland, Mississippi|Richland]]
: {{jct|country=USA|US|80}} in [[Brandon, Mississippi|Brandon]]
: {{jct|country=USA|US|80}} in Brandon
: {{jct|country=USA|US|80}} east-southeast of [[Lake, Mississippi|Lake]]
: {{jct|country=USA|US|80}} west-southwest of [[Meridian, Mississippi|Meridian]]. The highways travel concurrently to Meridian.
: {{jct|country=USA|I|59}} in Meridian. The highways travel concurrently to [[Birmingham, Alabama]].
: {{jct|country=USA|US|11}} in Meridian. The highways travel concurrently through Meridian.
: {{jct|country=USA|US|45}} in Meridian
: {{jct|country=USA|US|11|US|80}} west-northwest of [[Kewanee, Mississippi|Kewanee]]
;Alabama
: {{jct|country=USA|Future|85}} near [[Cuba, Alabama|Cuba]]
: {{jct|country=USA|US|11|US|43}} south of [[Knoxville, Alabama|Knoxville]]
: {{jct|country=USA|I|359|US|11}} in [[Tuscaloosa, Alabama|Tuscaloosa]]
: {{jct|country=USA|US|82}} in Tuscaloosa
: {{jct|country=USA|US|11}} in Tuscaloosa
: {{jct|country=USA|US|11}} in Tuscaloosa
: {{jct|country=USA|US|11}} south of [[Lake View, Alabama|Lake View]]. The highways travel concurrently to [[Bessemer, Alabama|Bessemer]].
: {{jct|country=USA|I|459}} southwest of [[McCalla, Alabama|McCalla]]
: {{jct|country=USA|US|78}} in Birmingham
: {{jct|country=USA|I|65}} in Birmingham
: {{jct|country=USA|US|31|US|280}} in Birmingham
: {{jct|country=USA|US|11}} in Birmingham
: {{jct|country=USA|I|459}} in [[Irondale, Alabama|Irondale]]
: {{jct|country=USA|US|78}} in [[Leeds, Alabama|Leeds]]
: {{jct|country=USA|US|411}} on the Leeds–[[Moody, Alabama|Moody]] line
: {{jct|country=USA|US|78}} northwest of [[Cooks Springs, Alabama|Cooks Springs]]. The highways travel concurrently to [[Pell City, Alabama|Pell City]].
: {{jct|country=USA|US|231}} in Pell City
: {{jct|country=USA|US|78}} in [[Riverside, Alabama|Riverside]]
: {{jct|country=USA|US|431}} east of [[Oxford, Alabama|Oxford]]
;Georgia
: {{jct|country=USA|US|27}} in [[Bremen, Georgia|Bremen]]
: {{jct|country=USA|I|285|dab1=Georgia}} in [[Atlanta]]
: {{jct|country=USA|I|75|I|85}} in Atlanta
: {{jct|country=USA|US|23}} in Atlanta
: {{jct|country=USA|I|285|dab1=Georgia}} on the [[Panthersville, Georgia|Panthersville]]–[[Candler-McAfee, Georgia|Candler-McAfee]] CDP line
: {{jct|country=USA|US|278}} southeast of [[Lithonia, Georgia|Lithonia]]. The highways travel concurrently to [[Covington, Georgia|Covington]].
: {{jct|country=USA|US|278}} in [[Social Circle, Georgia|Social Circle]]
: {{jct|country=USA|US|129|US|441}} in [[Madison, Georgia|Madison]]
: {{jct|country=USA|US|278}} in [[Barnett, Georgia|Barnett]]
: {{jct|country=USA|US|221}} south of [[Appling, Georgia|Appling]]
: {{jct|country=USA|I|520}} in [[Augusta, Georgia|Augusta]]
;South Carolina
: {{jct|country=USA|US|25}} in [[North Augusta, South Carolina|North Augusta]]
: {{jct|country=USA|I|520}} in North Augusta
: {{jct|country=USA|US|1}} north-northeast of [[Aiken, South Carolina|Aiken]]
: {{jct|country=USA|US|178}} southeast of [[Batesburg-Leesville, South Carolina|Batesburg-Leesville]]
: {{jct|country=USA|US|1}} east of [[Lexington, South Carolina|Lexington]]
: {{jct|country=USA|US|378}} north of [[Oak Grove, South Carolina|Oak Grove]]
: {{jct|country=USA|I|26|US|76}} on the [[Seven Oaks, South Carolina|Seven Oaks]]–[[St. Andrews, South Carolina|St. Andrews]] CDP line
: {{jct|country=USA|US|176}} in St. Andrews
: {{jct|country=USA|US|321}} north of [[Columbia, South Carolina|Columbia]]
: {{jct|country=USA|US|21}} in Columbia
: {{jct|country=USA|US|1}} in [[Dentsville, South Carolina|Dentsville]]
: {{jct|country=USA|I|77}} on the Dentsville–[[Woodfield, South Carolina|Woodfield]] CDP line
: {{jct|country=USA|US|601}} in [[Lugoff, South Carolina|Lugoff]]
: {{jct|country=USA|US|521}} in [[Camden, South Carolina|Camden]]
: {{jct|country=USA|US|15}} southwest of [[Bishopville, South Carolina|Bishopville]]
: {{jct|country=USA|US|401}} northeast of [[Lamar, South Carolina|Lamar]]
: {{jct|country=USA|I|95}} in [[Florence, South Carolina|Florence]]
<ref name=randmcnally>{{cite book |author = Rand McNally |year = 2014 |title = The Road Atlas |edition = Walmart |location = Chicago |publisher = Rand McNally |pages = 4, 28, 44, 56, 92, 98-100|isbn = 978-0-528-00771-2}}</ref>

==Auxiliary routes==
Two I-420s were planned but never completed or built. [[Interstate 420 (Louisiana)|One]] was to be a [[Bypass (road)|bypass]] around [[Monroe, Louisiana]], but was never built. [[Interstate 420 (Georgia)|The other I-420]] was planned as a bypass to the south of [[Downtown Atlanta]]. Due to [[Atlanta freeway revolts|anti-freeway sentiments]], this I-420 was never completed, and the already-built portion has been signed as [[Georgia State Route 154|State Route&nbsp;154]] (SR&nbsp;154)/[[Georgia State Route 166|SR&nbsp;166]], named the [[Langford Parkway]] (formerly the Lakewood Freeway).

* [[Shreveport, Louisiana]]: [[Interstate 220 (Louisiana)|I-220]]
* [[Jackson, Mississippi]]: [[Interstate 220 (Mississippi)|I-220]]
* [[Augusta, Georgia]]: [[Interstate 520|I-520]]
* [[Fort Worth, Texas]]: [[Interstate 820|I-820]]

==See also==
* {{Portal-inline|U.S. Roads}}

==References==
{{Reflist}}
* {{citation|author=Georgia Department of Transportation, Office of Transportation Data |title=Interstate Mileage Report (438 Report) |year=2003 |url=http://www.dot.state.ga.us/DOT/plan-prog/transportation_data/400reports/2003/dpp438_2003.pdf |url-status=dead |archive-url=https://web.archive.org/web/20060218010013/http://www.dot.state.ga.us/DOT/plan-prog/transportation_data/400reports/2003/dpp438_2003.pdf |archive-date=February 18, 2006 }}

==External links==
{{Attached KML|display=title,inline}}
{{commons category}}
* {{osmrelation-inline}}
* [https://www.aaroads.com/interstate-guide/i-020/ I-20 on Interstate-Guide.com]
* [https://web.archive.org/web/20051123233432/http://www.duke.edu/~rmalme/ncfutint.html Proposed I-20 extension in North Carolina]

{{I-20 aux}}
{{interstates}}

{{DEFAULTSORT:I20}}
[[Category:Interstate 20| ]]
[[Category:Interstate Highway System|20]]