Interstate 22 (abbreviated I-22) is an under-construction highway currently known as Corridor X which will connect Birmingham with Memphis, Tennessee. When completed, it will follow the U.S. Highway 78 corridor along a 176 mile (283 km) route. The limited access freeway will connect Interstate 55 and Interstate 40 in the northwest to Interstate 65 and Interstate 20 in the southeast, passing through the cities of Holly Springs, New Albany, and Tupelo, Mississippi; and Hamilton and Jasper, Alabama.
The part of I-22 east of Fulton, Mississippi was approved in 1978 as Corridor X, part of the Appalachian Development Highway System. Parts of the highway have been under construction ever since, with the final portions connecting it to I-65 to be completed. Funding for the Alabama sections has been a priority for U.S. Senator Richard Shelby, who serves as Chairman of the Senate Transportation Subcommittee. In 2004 Corridor X was designated as Future Interstate 22 by Public Law No: 108-199, and the designation was made official on April 18, 2005. In Alabama signs indicated the future interstate were unveiled on that date.
Approximately 78 miles of Interstate 22 is open to traffic in Alabama. The westernmost 65 miles in Alabama (to Bevill Industrial Parkway southeast of Jasper) opened to traffic in a series of stages through November 22, 2005. An additional 13 miles, from Walker County Highway 81 to Cherry Avenue near the city limits of Birmingham, including the interchange with U. S. Highway 78, were opened in June 2007. A 20-mile section connecting the ends at Industrial Parkway and Cherry Avenue opened November 14, 2007. A segment between Cherry Avenue to a spot about 1/2 mile shy of I-65 near Fultondale, including an interchange with Coalburg Road, opened in December 2009; it is the last segment to open before the connection is made with I-65. ALDOT also plans to widen Coalburg Road from the I-22 interchange southward to Daniel Payne Drive (which leads to I-65) in anticipation of heavy truck traffic usage. However, no timetable for this project has been announced by ALDOT.
The highway will officially become Interstate 22 once the 14-bridge stack interchange with I-65 is completed. Construction of the interchange began on August 1, 2010 and could be completed in 2014. Archer Western Contractors submitted the lowest bid of $168.6 million, making it the most expensive single interchange in the state. The work will be done in four separate projects, keeping two to three lanes open each way on I-65 at all times. In all, the approved portions of I-22 are expected to cost about $1.4 biillion.
A project to widen I-65 to four lanes in either direction has begun from just south of the upcoming I-22/I-65 interchange southward to the 16th Street interchange. Under the present design, I-22 will terminate at I-65, but the mainline highway will continue east beyond I-65 as a long pair of ramps to US-31. Another associated project will be a widening of I-65 from the I-22 interchange northward to the Walker Chapel Road exit.
 Alabama exit list
|Marion||3||Marion County Road 33|
|Hamilton||7||Alabama State Highway 74 - Weston, Hamilton|
|11||Alabama State Highway 17 - Hamilton, Sulligent|
|14||Marion County Road 35|
|16||US 43/US 278 - Hamilton, Guin|
|22||Marion County Road 45|
|26||Alabama State Highway 44 - Brilliant, Guin|
|30||Alabama State Highway 129 - Brilliant, Winfield|
|34||Alabama State Highway 233 - Glen Allen, Natural Bridge|
|Walker||39||Alabama State Highway 13 - Natural Bridge, Eldridge|
|Carbon Hill||46||Walker County Road 11 - Carbon Hill, Nauvoo|
|52||Alabama State Highway 118 - Carbon Hill|
|53||US Alt 78|
|Jasper||57||Alabama State Highway 118 East - Jasper|
|61||Alabama State Highway 69 - Jasper, Tuscaloosa||Old exit 96|
|63||Alabama State Highway 269 - Jasper, Parrish||Old exit 101|
|65||Industrial Parkway Road||Old exit 104|
|70||Walker County Road 22 - Cordova, Parrish|
|72||Walker County Road 61 - Cordova|
|78||Walker County Road 81 - Dora, Sumiton|
|Jefferson||81||Snowville Brent Road - West Jefferson|
|Graysville||85||U.S. Highway 78 - Graysville, Adamsville|
|87||Cherry Avenue - Graysville|
|Forestdale||89||Hillcrest Road - Graysville, Adamsville|
|91||Cherry Avenue - Brookside|
|93||Coalburg Road - Fultondale||Highway ends|
- "Interstate 22" (24 May 2006, 11:10 UTC) . Wikipedia, The Free Encyclopedia. Accessed August 8, 2006.
- MacDonald, Ginny (November 26, 2006). "Roads chief wants I-22 done by 2010." The Birmingham News.
- MacDonald, Ginny (June 2, 2007). "13 miles of Corridor X to open." The Birmingham News.
- MacDonald, Ginny (October 31, 2007). "26 miles of Corridor X to open Nov. 14." The Birmingham News.
- "Interstate 22" (October 31, 2007, 15:44 UTC) . Wikipedia, The Free Encyclopedia. Accessed October 31, 2007/
- Kent, Dawn and Kent Faulk (November 18, 2007) "Corridor X (or future I-22) will bring big changes to parts of Alabama." Birmingham News
- Gray, Jeremy (July 26, 2010) "Birmingham I-65/Corridor X project set to launch Aug. 1." Birmingham News