Interstate 55 (I-55) is part of the
Interstate Highway System
The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System, or the Eisenhower Interstate System, is a network of controlled-access highways that forms part of the National Hi ...
that runs from
LaPlace, Louisiana
LaPlace ( ) is a census-designated place (CDP) in St. John the Baptist Parish, Louisiana, United States, situated along the east bank of the Mississippi River, in the New Orleans metropolitan area. In 2020, it had a population of 28,841.
LaPla ...
, to
Chicago, Illinois
Chicago is the List of municipalities in Illinois, most populous city in the U.S. state of Illinois and in the Midwestern United States. With a population of 2,746,388, as of the 2020 United States census, 2020 census, it is the List of Unite ...
. In the state of
Tennessee
Tennessee (, ), officially the State of Tennessee, is a landlocked U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders Kentucky to the north, Virginia to the northeast, North Carolina t ...
, the Interstate is located entirely within the state's second-largest city of
Memphis, running from the
Mississippi
Mississippi ( ) is a U.S. state, state in the Southeastern United States, Southeastern and Deep South regions of the United States. It borders Tennessee to the north, Alabama to the east, the Gulf of Mexico to the south, Louisiana to the s ...
state line in the
Whitehaven
Whitehaven is a town and civil parish in the Cumberland (unitary authority), Cumberland district of Cumbria, England. It is a port on the north-west coast, and lies outside the Lake District National parks of England and Wales, National Park. ...
neighborhood to the
Arkansas
Arkansas ( ) is a landlocked state in the West South Central region of the Southern United States. It borders Missouri to the north, Tennessee and Mississippi to the east, Louisiana to the south, Texas to the southwest, and Oklahoma ...
border across the
Mississippi River
The Mississippi River is the main stem, primary river of the largest drainage basin in the United States. It is the second-longest river in the United States, behind only the Missouri River, Missouri. From its traditional source of Lake Ita ...
. 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
Memphis International Airport is a civil-military airport located southeast of downtown Memphis in Shelby County, Tennessee, United States. It is the primary international airport serving Memphis. It covers and has four runways., effective A ...
, the second-busiest cargo airport in the world.
I-55 is known as the Bishop J. O. Patterson Sr. Memorial Parkway and the W.B. Fowler Sr. Expressway in Tennessee. The Interstate utilizes the
Memphis & Arkansas Bridge across the Mississippi River. Completed in 1949, this is the oldest bridge on the Interstate Highway System in Tennessee and the oldest bridge on I-55. The remainder of the route was constructed between 1958 and 1967, making it the first mainline Interstate Highway in Tennessee to be completed. The route also had an
auxiliary Interstate
Auxiliary Interstate Highways (also called three-digit Interstate Highways) are a subset of highways within the United States' Interstate Highway System. The 323 auxiliary routes generally fall into three types: spur routes, which connect to or i ...
, I-255, which was renumbered as an extension of
I-240 in 1973. Since its construction, the Interstate has seen a number of expansion and improvement projects, with additional ones planned for the future.
Route description
I-55 is maintained by the
Tennessee Department of Transportation
The Tennessee Department of Transportation (TDOT) is the department of transportation for the State of Tennessee, with multimodal responsibilities in roadways, aviation, public transit, waterways, and railroads. It was established in 1915 as the ...
(TDOT), along with all other
Interstate
The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System, or the Eisenhower Interstate System, is a network of controlled-access highways that forms part of the National H ...
,
U.S.
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 states and a federal capital district, Washington, D.C. The 48 contiguous ...
, and
state
State most commonly refers to:
* State (polity), a centralized political organization that regulates law and society within a territory
**Sovereign state, a sovereign polity in international law, commonly referred to as a country
**Nation state, a ...
highways in Tennessee. In 2023,
annual average daily traffic
Annual average daily traffic (AADT) is a measure used primarily in transportation planning, transportation engineering and retail location selection. Traditionally, it is the total volume of vehicle traffic of a highway or road for a year divided ...
(AADT) volumes ranged from 113,713 vehicles per day between
U.S. Route 51 (US 51) and I-240 and 59,207 vehicles per day between McLemore Avenue and Crump Boulevard/Riverside Drive.
I-55 enters Tennessee from
Southaven, Mississippi
Southaven is a city in DeSoto County, Mississippi, United States. It is a principal city in Memphis metropolitan area, Greater Memphis. The 2020 United States census, 2020 census reported a population of 54,648, making it the List of municipal ...
, in the
Whitehaven
Whitehaven is a town and civil parish in the Cumberland (unitary authority), Cumberland district of Cumbria, England. It is a port on the north-west coast, and lies outside the Lake District National parks of England and Wales, National Park. ...
neighborhood of southwestern Memphis, with the northern ramps from the northernmost Mississippi exit extending into Tennessee. Traveling in a direct north-south alignment, this stretch of the freeway carries eight lanes, with the leftmost lanes serving as
high-occupancy vehicle (HOV) lanes during rush hour.
The first interchange is with
State Route 175 (SR 175, Shelby Drive).
The Interstate then passes west of the
Memphis International Airport
Memphis International Airport is a civil-military airport located southeast of downtown Memphis in Shelby County, Tennessee, United States. It is the primary international airport serving Memphis. It covers and has four runways., effective A ...
, the second-busiest cargo airport in the world, and shifts to the northwest, where the northbound Tennessee Welcome Center is located. A short distance later is a complex interchange with Brooks Road and US 51 (Elvis Presley Boulevard) near
Graceland
Graceland is a mansion on a estate in Memphis, Tennessee, United States, once owned by American singer Elvis Presley. Presley is buried there, as are his parents Vernon and Gladys, paternal grandmother Minnie Mae, grandson Benjamin, and daugh ...
, the home of
Elvis Presley
Elvis Aaron Presley (January 8, 1935 – August 16, 1977) was an American singer and actor. Referred to as the "King of Rock and Roll", he is regarded as Cultural impact of Elvis Presley, one of the most significant cultural figures of the ...
. Gradually turning north, the HOV restrictions terminate and the Interstate crosses
Nonconnah Creek before reaching a two-level
cloverstack interchange with
Interstate 240.
[ Here, a pair of ramps carry I-55's traffic through the interchange into an east-west alignment, and I-240 shifts from a north-south alignment heading from ]Downtown
''Downtown'' is a term primarily used in American and Canadian English to refer to a city's sometimes commercial, cultural and often the historical, political, and geographic heart. It is often synonymous with its central business district ( ...
and Midtown Memphis
Midtown is a collection of neighborhoods in Memphis, Tennessee, to the east of Downtown Memphis, Tennessee, Downtown.
Midtown is home to many cultural attractions, institutions of higher education, and noteworthy pieces of architecture. The ...
to an east-west direction through the southern neighborhoods of the city.[
Carrying between four and six lanes for its remaining length in Tennessee, I-55 first crosses a series of railroads serving an industrial area to the north, and has a three-level cloverstack interchange with US 61 (Third Street). Passing to the north of a ]levee
A levee ( or ), dike (American English), dyke (British English; see American and British English spelling differences#Miscellaneous spelling differences, spelling differences), embankment, floodbank, or stop bank is an elevated ridge, natural ...
, the freeway then gradually turns to the north, where it crosses another railroad before reaching a single-point urban interchange
A single-point urban interchange (SPUI, or ), also called a single-point interchange (SPI) or single-point diamond interchange (SPDI), is a type of highway interchange. The design was created in order to help move large volumes of traffic th ...
(SPUI) with Mallory Avenue adjacent to an oil refinery
An oil refinery or petroleum refinery is an industrial processes, industrial process Factory, plant where petroleum (crude oil) is transformed and refining, refined into products such as gasoline (petrol), diesel fuel, Bitumen, asphalt base, ...
operated by Valero Energy
Valero Energy Corporation is an American-based fuels producer mostly involved in manufacturing and marketing transportation fuels and other related products. It is headquartered in San Antonio, Texas, United States. Throughout the United Sta ...
. Passing west of the Riverside neighborhood, the Interstate has an interchange with South Parkway, part of the historic Memphis Parkway System before reaching an interchange with McLemore Avenue near the eastern end of the President's Island
President's Island is a peninsula on the Mississippi River in southwest Memphis, Tennessee. The city's major river port and an industrial park are located there.
History
The name ''President'' or ''President's'' Island appeared as early as 1801 ...
peninsula on the Mississippi River and crossing another railroad. Traveling northeastward for a brief distance, the Interstate reaches a complex interchange with US 61/ 64/ 70/ 78/ 79 (Crump Boulevard) and Riverside Drive, where it begins a concurrency with these U.S. routes. Here, the freeway turns directly westward, with a pair of flyover bridges carrying I-55 traffic through the interchange, and the ramps connect to the surface streets via a large roundabout
A roundabout, a rotary and a traffic circle are types of circular intersection or junction in which road traffic is permitted to flow in one direction around a central island, and priority is typically given to traffic already in the junct ...
. The freeway then turns slightly northwest and crosses the Mississippi River on the Memphis & Arkansas Bridge, where it enters Arkansas.[
]
History
Predecessor highways and bridges
In the 19th century a number of trails connected Memphis with surrounding areas. In 1915, the Tennessee Department of Highways and Public Works, the predecessor agency to TDOT, was established, and tasked with designating a state highway system. That year, they designated the Memphis to Bristol Highway, which ran approximately from Memphis to Bristol in the northeastern corner of the state. On October 1, 1923, the highway department established the state's numbered highway system. The Memphis to Bristol Highway was designated as State Route 1 (SR 1); the road between Memphis and Vicksburg, Mississippi
Vicksburg is a historic city in Warren County, Mississippi, United States. It is the county seat. The population was 21,573 at the 2020 census. Located on a high bluff on the east bank of the Mississippi River across from Louisiana, Vicksburg ...
, was designated as part of SR 14; the main road connecting Memphis with Jackson, Mississippi
Jackson is the List of capitals in the United States, capital and List of municipalities in Mississippi, most populous city of the U.S. state of Mississippi. The city sits on the Pearl River (Mississippi–Louisiana), Pearl River and is locate ...
, and New Orleans, Louisiana
New Orleans (commonly known as NOLA or The Big Easy among other nicknames) is a Consolidated city-county, consolidated city-parish located along the Mississippi River in the U.S. state of Louisiana. With a population of 383,997 at the 2020 ...
, was designated as SR 3; and the road running southeast of Memphis to Birmingham, Alabama
Birmingham ( ) is a city in the north central region of Alabama, United States. It is the county seat of Jefferson County, Alabama, Jefferson County. The population was 200,733 at the 2020 United States census, 2020 census, making it the List ...
, was established as SR 4. When the United States Numbered Highway System
The United States Numbered Highway System (often called U.S. Routes or U.S. Highways) is an integrated network of roads and highways numbered within a nationwide grid in the contiguous United States. As the designation and numbering of these ...
was established on November 11, 1926, these routes were designated as U.S. Routes 70, 61, 51, and 78, respectively.
The Frisco Bridge
The Frisco Bridge, previously known as the Memphis Bridge, is a cantilevered through truss bridge carrying a rail line across the Mississippi River between West Memphis, Arkansas, and Memphis, Tennessee.
Construction
At the time of the Memph ...
was the first bridge across the Mississippi River to be constructed in Memphis, as well as the first crossing of the Lower Mississippi River
The Lower Mississippi River is the portion of the Mississippi River downstream of Cairo, Illinois, Cairo, Illinois. From the Confluence (geography), confluence of the Ohio River and the Middle Mississippi River at Cairo, the Lower flows just u ...
. Completed in 1892, this bridge carried a single track of the Kansas City, Fort Scott and Memphis Railway, which was later acquired by the St. Louis–San Francisco Railway. The Frisco bridge was joined by the Harahan Bridge in 1916, a double-track bridge which was jointly constructed by the Rock Island, Iron Mountain, and Cotton Belt
The Cotton Belt is a region of the Southern United States where cotton was the predominant cash crop from the late 19th century into the 20th century. railroads. This bridge contained a series of wagonway
A wagonway (or waggonway; also known as a horse-drawn railway, or horse-drawn railroad) was a method of rail transport, railway transportation that preceded the steam locomotive and used horses to haul wagons. The terms plateway and tramway (indu ...
s that opened the following year and carried automobile traffic. By the late 1920s, these wagonways had become congested, and the need for a new bridge exclusively carrying automobile traffic became apparent. Preliminary planning was delayed by the Great Depression
The Great Depression was a severe global economic downturn from 1929 to 1939. The period was characterized by high rates of unemployment and poverty, drastic reductions in industrial production and international trade, and widespread bank and ...
, and did not begin until the creation of the joint Memphis and Arkansas Bridge committee on March 14, 1939. This committee was headed by then-Memphis mayor and political boss
In the politics of the United States of America, a boss is a person who controls a faction or local branch of a political party. They do not necessarily hold public office themselves; most historical bosses did not, at least during the times of th ...
E. H. Crump, and included Congressman Walter Chandler
Walter "Clift" Chandler (October 5, 1887 – October 1, 1967) was an American politician from Tennessee and a United States House of Representatives, Representative for the ninth district of Tennessee. He served as mayor of Memphis, Tennessee f ...
and U.S. Senator Kenneth McKellar. The plans also included a new street leading up to the bridge bypassing both Downtown Memphis and historic African American
African Americans, also known as Black Americans and formerly also called Afro-Americans, are an Race and ethnicity in the United States, American racial and ethnic group that consists of Americans who have total or partial ancestry from an ...
neighborhoods to the south. This street became known as Crump Boulevard. Engineering firm Modjeski and Masters, who also helped design the Frisco and Harahan bridges, was hired on May 19, 1944, and construction of the bridge began on September 12, 1945. Work on Crump Boulevard began in September 1948. On December 17, 1949, the Memphis & Arkansas Bridge and Crump Boulevard opened to traffic.
Interstate Highway planning and construction
The highway that is now I-55 had its origins in the late 1930s, when the federal government began planning for a national "superhighway" system. A 1939 report titled ''Toll Roads and Free Roads'' and published by the Bureau of Public Roads (BPR), the predecessor agency to the Federal Highway Administration
The Federal Highway Administration (FHWA) is a division of the United States Department of Transportation that specializes in highway transportation. The agency's major activities are grouped into two programs, the Federal-aid Highway Program a ...
(FHWA), recommended a controlled-access highway connect Memphis with Jackson, Mississippi, to the south, and Chicago
Chicago is the List of municipalities in Illinois, most populous city in the U.S. state of Illinois and in the Midwestern United States. With a population of 2,746,388, as of the 2020 United States census, 2020 census, it is the List of Unite ...
to the north. This routing was affirmed in the National Interregional Highway Committee's 1944 report, titled ''Interregional Highways''. Three years later, a plan produced by the Public Roads Administration of the now-defunct Federal Works Agency The Federal Works Agency (FWA) was an Regulatory agency, independent agency of the federal government of the United States which administered a number of public construction, building maintenance, and public works relief functions and laws from 1939 ...
recommended the freeway cross the Mississippi River in Memphis into Arkansas, and run through St. Louis
St. Louis ( , sometimes referred to as St. Louis City, Saint Louis or STL) is an independent city in the U.S. state of Missouri. It lies near the confluence of the Mississippi and the Missouri rivers. In 2020, the city proper had a populatio ...
before reaching Chicago. A plan for Memphis' freeway system produced in 1955 recommended that a north-south freeway enter the city in the Whitehaven community, and intersect with an east-west route in Midtown. A loop encircling the city was also planned, which would interchange with the north-south route directly north of Nonconnah Creek, and run along the riverfront, crossing Crump Boulevard and the east-west route, before crossing Mud Island and intersecting with the northern terminus of the north-south route. By July 1956, the freeway between Crump Boulevard and the north-south freeway north of town had been cancelled due to opposition from the Bureau of Public Roads, which resulted in the freeway being rerouted across the Memphis & Arkansas Bridge. This would result in the bridge becoming the oldest bridge on the Interstate Highway System in Tennessee. The Federal-Aid Highway Act of 1956
The Federal-Aid Highway Act of 1956, also known as the National Interstate and Defense Highways Act, was enacted on June 29, 1956, when President Dwight D. Eisenhower signed the bill into law. With an original authorization of $25 billion (eq ...
established the Interstate Highway System and allocated a total of of Interstate Highways to Tennessee, including the freeway that would become I-55.[ The numbering was approved by the ]American Association of State Highway Officials
The American Association of State Highway and Transportation Officials (AASHTO) is a standards setting body which publishes specifications, test protocols, and guidelines that are used in highway design and construction throughout the United St ...
on August 14, 1957, for the north-south freeway between the Mississippi state line and the interchange adjacent to Nonconnah Creek, and the original loop route between this interchange and the Mississippi River.
The first segment of I-55 to begin construction after the passage of the Federal-Aid Highway Act was the interchange with I-240, along with a short stretch of that route east of the interchange. A contract for this project was awarded on July 25, 1958.[ The section between the Mississippi state line and US 51/Brooks Road was awarded in two smaller segments on June 26, 1959, and October 30, 1959, and was opened to traffic on December 2, 1961.] This was the first completed freeway segment in Memphis. On December 15, 1962, the short section between US 51/Brooks Road and I-240, along with an adjacent section of I-240 to the east, was dedicated and opened to traffic. The section between I-240 and east of US 61 (Third Street) was let on February 16, 1962, and the adjacent section extending to Horn Lake Road was awarded on December 13, 1963. The section between Horn Lake Road and South Parkway was let on February 28, 1964.[ On March 18, 1966, the section between I-240 and US 61 was dedicated and opened. The section between US 61 and South Parkway was dedicated and opened on October 14, 1966. Work on the last section, located between South Parkway and the Memphis & Arkansas Bridge and which consisted of upgrading the reused stretch of Crump Boulevard between the bridge and the cloverleaf interchange to freeway standards, began on September 11, 1964, and was opened on April 20, 1967.] I-55 was the first mainline Interstate Highway in Tennessee to be completed.
Later history
Crump Interchange reconstruction
As traffic volumes grew, the cloverleaf interchange with Crump Boulevard gradually became inadequate, leading to congestion and a high accident rate. The design required I-55 northbound traffic to utilize a loop ramp with a design speed to pass through the interchange. Southbound traffic used a one-lane ramp in order to remain on I-55. Originally, northbound traffic had to merge onto a one-lane loop with a tight radius while traffic going from I-55 southbound to Riverside Drive merged into traffic on another loop ramp. A temporary solution was put into effect in 2011 by widening the northbound loop to two lanes, eliminating the loop ramp between I-55 southbound and Riverside Drive, and creating a left turn lane for this traffic. This eliminated having to make a lane change in order to stay on I-55 northbound. In June 2021, a second lane was added for the I-55 southbound ramp in response to increased traffic resulting from the Hernando de Soto Bridge closure. The FHWA first approved a draft environmental impact statement for the reconstruction project on March 25, 2009. Two initial plans were developed that would have required the demolition of eight homes in the predominately African American French Fort neighborhood, but after input from residents, two additional designs were created to shift the I-55 lanes to the east in order to avoid this. These designs also included a roundabout between Crump Boulevard, Riverside Drive, and Alson Avenue at the location of the cloverleaf interchange. The FHWA approved the final environmental impact statement on June 28, 2011, and a record of decision for the final design, called Alternative Z-1, on January 25, 2012.
The final design included construction of a flyover bridge to carry I-55 traffic through the interchange, with ramps providing access to the roundabout. In addition, the interchange with Metal Museum Drive was eliminated, a new Wisconsin Street overpass was constructed, noise walls were erected, and the Memphis & Arkansas Bridge was repaired. The project which was expected to cost $32.4 million in 2014, was first delayed that year due to a shortage of federal transportation funds. On May 27, 2015, TDOT announced plans to close the Memphis & Arkansas Bridge for nine months as part of the project, beginning in early 2017. This drew considerable backlash from residents, businesses, and government officials in the Memphis area, prompting TDOT to reconsider their plans for construction and further delay the project. At the time, bidding for the project was scheduled for December 2015. On July 24, 2015, TDOT announced that they would no longer pursue a long-term closure of the bridge, and would conduct more detailed studies on how to implement construction over the next year. On March 30, 2022, TDOT awarded a $141.2 million contract for the project. The project shortened the closure time of the Memphis & Arkansas Bridge to two weeks. Preliminary work began on May 3, 2022, and construction began on June 13, after being postponed for seven days due to inclement weather. The revamped interchange was dedicated in a ceremony by Governor Bill Lee on May 6, 2025.
Memphis & Arkansas Bridge replacement
Since the early 1990s, leaders in the Memphis area have projected an eventual need for a third highway bridge across the Mississippi River in the area due to increasing traffic volumes. In addition, the need to eventually replace the Memphis & Arkansas Bridge on I-55 has been recognized, due to its age and the fact that it does not meet Interstate Highway standards
Standards for Interstate Highways in the United States are defined by the American Association of State Highway and Transportation Officials (AASHTO) in the publication ''A Policy on Design Standards: Interstate System''. For a certain highway t ...
. The bridge is also located within the New Madrid Seismic Zone, one of the most seismically active regions in North America, and was not designed to withstand a high magnitude earthquake. In 2006, TDOT commissioned a feasibility study on the possibility of constructing an additional bridge across the Mississippi River in Memphis. This explored the possibility of constructing a third bridge to relieve congestion on the Memphis & Arkansas Bridge and the nearby Hernando de Soto Bridge on I-40, as well as replacing the former entirely. A study was conducted in 2009 on the possibility of a toll bridge
A toll bridge is a bridge where a monetary charge (or '' toll'') is required to pass over. Generally the private or public owner, builder and maintainer of the bridge uses the toll to recoup their investment, in much the same way as a toll road ...
across the river, and on January 11, 2011, TDOT completed a study on the possibility of a new rail and auto bridge in Memphis, which was known as the "Southern Gateway Project". In February 2014, TDOT completed a cost benefit analysis on this project. This project reportedly faded away due to cost and an inability of the communities in the Memphis area to agree on a location for the bridge.
The need for a new bridge was once again thrust into the spotlight when the Hernando de Soto bridge was closed to all traffic between May 11 and August 2, 2021, due to a fracture in the structure. This forced much of the traffic on I-40 to detour across the Memphis & Arkansas Bridge. Later that year, the Infrastructure Investment and Jobs Act
The Infrastructure Investment and Jobs Act (IIJA), also known as the Bipartisan Infrastructure Law (BIL),H.R. 3684 is a United States federal statute enacted by the 117th United States Congress and signed into law by President Joe Biden on Nov ...
(IIJA) was enacted by Congress. This legislation includes the Bridge Investment Program (BIP), which provides $7.25 billion in federal funding until 2026 for bridge projects costing over $100 million. These projects are awarded in competitive grants at 50% of the total cost. On April 17, 2023, Governor Bill Lee signed into law the Transportation Modernization Act, which provides increased funding for highway projects in Tennessee. Six months later TDOT and the Arkansas Department of Transportation
The Arkansas Department of Transportation (ARDOT), formerly the Arkansas Highway and Transportation Department, is a government department in the U.S. state of Arkansas. Its mission is to provide a safe, efficient, aesthetically pleasing and env ...
(ARDOT) completed a study on the possibility of a new bridge in Memphis, which found that replacing the Memphis & Arkansas bridge would be the most cost-effective option. On December 4, 2023, TDOT and ARDOT jointly submitted an application for a grant under the BIP to replace the Memphis & Arkansas Bridge. Under the terms of the application, TDOT and ARDOT have agreed to each pay for 25% of the total cost of the bridge, which is tentatively expected to cost $787.5 million, although the final figure could be higher. On July 12, 2024, a $394 million grant was awarded for the replacement. This project, which has been named "America's River Crossing", is tentatively planned to begin in 2026.
Other history
I-55 was widened from four to eight lanes between the Mississippi state line and the I-240 interchange in two phases. The first phase, which took place between February 1999 and June 2001, widened the section between Winchester Road and I-240. The second phase, which ran from early 2000 to July 2002, extended the widening south to the state line. In May 2008, work began on a project to reconfigure the interchange with Mallory Avenue from a partial cloverleaf interchange
A partial cloverleaf interchange or parclo is a modification of a cloverleaf interchange.
The design has been well received, and has since become one of the most popular freeway-to-arterial interchange designs in North America. It has also bee ...
into a single-point urban interchange
A single-point urban interchange (SPUI, or ), also called a single-point interchange (SPI) or single-point diamond interchange (SPDI), is a type of highway interchange. The design was created in order to help move large volumes of traffic th ...
. As part of this project, I-55 was widened to six lanes through the interchange, and new bridges were constructed over Mallory Lane, a railyard serving the Valero refinery, and Paul L. Lowery Road. Initially slated for completion in late 2010, the project experienced multiple delays, and was not completed until December 2012.
An extension of Interstate 69
Interstate 69 (I-69) is an Interstate Highway in the United States currently consisting of eight unconnected segments. The longest segment runs from Evansville, Indiana, northeast to the Canadian border in Port Huron, Michigan, and includ ...
through Tennessee was proposed under the 1991 Intermodal Surface Transportation Efficiency Act
The Intermodal Surface Transportation Efficiency Act of 1991 (ISTEA, ) is a United States federal law that posed a major change to transportation planning and policy, as the first U.S. federal legislation on the subject in the post-Interstate H ...
(ISTEA) as part of a corridor to facilitate trade between Canada and Mexico. This extension was further spearheaded by the enactment of the North American Free Trade Agreement
The North American Free Trade Agreement (, TLCAN; , ALÉNA), referred to colloquially in the Anglosphere as NAFTA, ( ) was an agreement signed by Canada, Mexico, and the United States that created a trilateral trade bloc in North America. The ...
(NAFTA) in 1994. This extension, sometimes considered part of the unofficial NAFTA superhighway, was proposed to utilize the section of I-55 between the Mississippi border and I-240, and continue north along that route. On January 18, 2008, the FHWA authorized Mississippi and Tennessee to sign I-69 between an interchange on I-55 in Hernando, Mississippi
Hernando is the county seat of DeSoto County, on the northwestern border of Mississippi, United States. The population was 17,138 according to the 2020 census records. It is located on the south side of the Memphis, Tennessee metro area. U.S ...
, and the I-40/ SR 300 interchange in north Memphis. Tennessee has not signed the extension of the route, although Mississippi has already done so. It is unclear, however, if the route will ever be built through Memphis. In November 2023, the (AASHTO) approved an extension of US 78 into Arkansas, which utilizes I-55 between the Memphis & Arkansas Bridge and the Crump interchange.
Honorary designations
The section of I-55 between the Arkansas state line and I-240, along with part of I-240 to the east, was named the "W.B. Fowler Sr. Expressway" by the Memphis City Commission in 1960 in honor of William B. Fowler, who served as city engineer between 1919 and 1962. The portion between the Mississippi state line and I-240 was named the "Bishop J. O. Patterson Sr. Memorial Parkway" by the Tennessee General Assembly
The Tennessee General Assembly (TNGA) is the state legislature (United States), state legislature of the U.S. state of Tennessee. It is a part-time bicameral legislature consisting of a Tennessee Senate, Senate and a Tennessee House of Representa ...
in 1995 in honor of J. O. Patterson Sr., who served as presiding bishop of the Memphis-based Church of God in Christ
The Church of God in Christ (COGIC) is an international Christian perfection#Holiness Pentecostalism, Holiness–Pentecostal Christian denomination, and a large Pentecostal denomination in the United States. Although an international and multi ...
from 1968 until his death in 1989.
Exit list
Auxiliary routes
The stretch of I-240 extending from north of the I-55/I-240 interchange to I-40 in downtown Memphis was originally numbered I-255. This section of highway opened in segments between 1965 and 1971. On November 1, 1971, the Tennessee Department of Highways sent a request to the FHWA to renumber I-255 as part of I-240, which was approved by AASHTO on November 10, 1973. I-155 is an auxiliary Interstate Highway that begins at a junction with I-55 in southeast Missouri
Missouri (''see #Etymology and pronunciation, pronunciation'') is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. Ranking List of U.S. states and territories by area, 21st in land area, it border ...
, and crosses the Mississippi River on the Caruthersville Bridge into northwest Tennessee, before terminating in Dyersburg, about north of Memphis.
References
External links
{{state detail page browse, type=I, route=55, statebefore=Mississippi, state=Tennessee, stateafter=Arkansas
Transportation in Memphis, Tennessee
Transportation in Shelby County, Tennessee
55
Tennessee