__NOTOC__ The following list contains the most notable road interchanges within the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territori ...

divided by each state, which are mainly part of the national

Interstate Highway System The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System, is a network of controlled-access highways that forms part of the National Highway System in the United States. T ...

and are all

freeway A controlled-access highway is a type of highway that has been designed for high-speed vehicular traffic, with all traffic flow—ingress and egress—regulated. Common English terms are freeway, motorway and expressway. Other similar terms ...

s intersecting with each other at a junction. Some of the biggest ones are:

Kennedy Interchange The Kennedy Interchange, unofficially, though universally, referred to as Spaghetti Junction, is the intersection of Interstate 64 (I-64), I-65 and I-71 at the northeastern edge of downtown Louisville, Kentucky, United States. It is named f ...

(I-64/I-65/I-71) in Louisville, Kentucky; the Marquette Interchange (I-94/I-43/I-794) and the $1.8 billion Zoo Interchange both in Milwaukee, Wisconsin; the Pregerson Interchange (I-110/I-105) in Los Angeles; and the Circle Interchange (I-90/I-94/I-290) in Chicago.

Alabama

*Malfunction Junction at I-20/ I-59 and

I-65 Interstate 65 (I-65) is a major north–south Interstate Highway in the central United States. As with most primary Interstates ending in 5, it is a major crosscountry, north–south route, connecting between the Great Lakes and the Gulf ...

Arizona

* Mini Stack *

The Stack The Stack is a colloquialism used to describe the symmetrical, four-level stack interchange in Phoenix, Arizona that facilitates movements between Interstate 17/ U.S. Route 60 and Interstate 10. Description In 2006, the Stack interchange saw ...

* SuperRedTan Interchange

Arkansas

Big Rock Interchange Big Rock Interchange is the I-430/ I-630/Chenal Parkway interchange in west Little Rock, Arkansas. The name is derived from a large rock formation discovered during expansion. The interchange was originally constructed in 1977, then in the mid ...

, the junction of I-430 and I-630, Little Rock, Arkansas *North Terminal Interchange, the junction of I-40 and I-30, Little Rock, Arkansas *South Terminal Interchange, the junction of I-30, I-440 and I-530, Little Rock, Arkansas

California

The first stack interchange in the world was the

Four Level Interchange The Four Level Interchange (officially the Bill Keene Memorial Interchange) is the first stack interchange in the world. Completed in 1949 and fully opened in 1953 at the northern edge of Downtown Los Angeles, California, United States, it connect ...

(renamed the

Bill Keene Memorial Interchange The Four Level Interchange (officially the Bill Keene Memorial Interchange) is the first stack interchange in the world. Completed in 1949 and fully opened in 1953 at the northern edge of Downtown Los Angeles, California, United States, it connect ...

), built in

Los Angeles, California Los Angeles ( ; es, Los Ángeles, link=no , ), often referred to by its initials L.A., is the largest city in the state of California and the second most populous city in the United States after New York City, as well as one of the world' ...

, and completed in 1949, at the junction of U.S. Route 101 and State Route 110. Since then, the

California Department of Transportation The California Department of Transportation (Caltrans) is an executive department of the U.S. state of California. The department is part of the cabinet-level California State Transportation Agency (CalSTA). Caltrans is headquartered in Sacr ...

(Caltrans) has built at least eight more four-level stacks throughout the state of

California California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the m ...

, as well as a larger number of three-level stack/ cloverleaf hybrids (where the least-used left-turning ramp is built as a cloverleaf-like 270-degree loop). Despite the construction of interchanges smoothing flow, 11 of the top 30 most congested stretches of highway in the U.S. are in Los Angeles. Los Angeles - Echangeur autoroute 110 105

Los Angeles - Echangeur autoroute 110 105

* Alemany Maze *

Dosan Ahn Chang Ho Memorial Interchange The Dosan Ahn Chang Ho Memorial Interchange, also known as the Harbor–Santa Monica Freeway Interchange, is a three-level cloverstack interchange that serves as the junction between the Harbor ( Interstate 110 and State Route 110) and Santa Mon ...

East Los Angeles Interchange The East Los Angeles Interchange is an interchange complex located in Boyle Heights, California, approximately 2.5 miles (4 km) east of Downtown Los Angeles. With its southern portion handling over 550,000 vehicles per day (2008 AADT), it is th ...

El Toro Y The El Toro "Y" is a freeway interchange in southern Orange County, California where the Santa Ana Freeway, Interstate 5 (I-5), and the San Diego Freeway (at that point the I-405) merge. South of the El Toro Y, the highway is named the ...

, at convergence of I-405 with I-5, in

El Toro, California Lake Forest is a city in Orange County, California. The population was 85,858 at the 2020 census. Lake Forest incorporated as a city on December 20, 1991. Prior to incorporation, the community had been known as El Toro. Following a vote in 20 ...

. This was thought to be one of the most congested interchanges in the world at one time. *

(1949), US 101 & SR 110 *

Hollywood Split The Hollywood Split (officially Bruce T. Hinman Memorial Interchange) is a freeway interchange in the San Fernando Valley area of Los Angeles, California. The interchange is officially named in the memory of California Highway Patrol officer Bruc ...

* Joe Colla Interchange *

Judge Harry Pregerson Interchange The Judge Harry Pregerson Interchange is a stack interchange near the Athens and Watts communities of Los Angeles, California, United States. It is the interchange of the following routes: * * The interchange permits traffic entering the interc ...

, I-110 and I-105 *

Kellogg Interchange The Kellogg Interchange complex is a freeway interchange in Southern California, connecting the San Bernardino (Interstate 10), Orange ( State Route 57), and Chino Hills ( State Route 71) freeways. The interchange is located at ...

MacArthur Maze The MacArthur Maze (or simply the Maze, also called the Distribution Structure) is a large freeway interchange near the east end of the San Francisco–Oakland Bay Bridge in Oakland, California. It splits Bay Bridge traffic into three freeways— ...

* Newhall Pass interchange *

Orange Crush interchange The Orange Crush interchange, frequently called The Crush, is a freeway interchange in the city of Orange, California, near the borders of the cities of Orange, Santa Ana, Anaheim, and Garden Grove. The Disneyland Resort, The Outlets at Orange ...

*The Fishhook, CA-1 and CA-17 in Santa Cruz * West Bakersfield Interchange *

Wheeler Ridge Interchange The Wheeler Ridge Interchange is a freeway interchange near Wheeler Ridge, California, where State Route 99 (SR 99) merges with Interstate 5 (I-5). Located approximately south of Bakersfield, it is the southernmost freeway inte ...

Colorado

* Mousetrap

Connecticut

* New Haven Mixmaster (multi-level interchange between Interstate 95/Connecticut Turnpike,

Interstate 91 Interstate 91 (I-91) is an Interstate Highway in the New England region of the United States. It provides the primary north–south thoroughfare in the western part of the region. The Interstate generally follows the course of the Conne ...

, and

Route 34 The following highways are numbered 34: for a list of roads numbered N34 : see list of N34 roads. International * AH34, Asian Highway 34 * European route E34 Australia * Cox Peninsula Road (Northern Territory) * (Sydney) * Maroondah Highway (Vi ...

New Haven, Connecticut New Haven is a city in the U.S. state of Connecticut. It is located on New Haven Harbor on the northern shore of Long Island Sound in New Haven County, Connecticut and is part of the New York City metropolitan area. With a population of 134 ...

) * The Stack (4-level stack interchange between Interstate 84 and Route 9 in

Farmington, Connecticut Farmington is a town in Hartford County in the Farmington Valley area of central Connecticut in the United States. The population was 26,712 at the 2020 census. It sits 10 miles west of Hartford at the hub of major I-84 interchanges, 20 miles ...

) * Waterbury Mixmaster (multi-level interchange between Interstate 84 and Route 8 in

Waterbury, Connecticut Waterbury is a city in the U.S. state of Connecticut on the Naugatuck River, southwest of Hartford and northeast of New York City. Waterbury is the second-largest city in New Haven County, Connecticut. According to the 2020 US Census, in 20 ...

)

Florida

Dolphin–Palmetto Interchange The Dolphin–Palmetto Interchange, also known as 826–836, is a complex four-level stack interchange in Miami-Dade County, Florida. It primarily serves as a highway interchange between State Road 826 (SR 826, Palmetto Expressway) a ...

Golden Glades Interchange The Golden Glades Interchange, located in Miami Gardens and North Miami Beach, Florida, United States, is the confluence of six major roads serving eastern and southern Florida. It is named after the original name of North 167th Street, Golden ...

Midtown Interchange The Midtown Interchange, located in the Civic Center and Overtown neighborhoods of Miami, Florida, is the convergence of three major motorways: I-95, I-395 (which connects to the MacArthur Causeway to the east), and the Dolphin Expressway (SR 8 ...

Rainbow Interchange The Rainbow Interchange was a four–level stack interchange located in Fort Lauderdale, Florida near the Fort Lauderdale-Hollywood International Airport. The interchange connects two major highways in the area, I-95 (leading to Miami and West P ...

Georgia

*Cobb Cloverleaf *

Tom Moreland Interchange Tom Moreland Interchange, colloquially known as ''Spaghetti Junction'', is the interchange of Interstate 85 (I-85) and I-285, along with several access roads, in northern DeKalb County, Georgia, northeast of Atlanta and just to the south of No ...

(Spaghetti Junction)

Illinois

Jane Byrne Interchange The Jane Byrne Interchange (until 2014, Circle Interchange) is a major freeway interchange near downtown Chicago, Illinois. It is the junction between the Dan Ryan, Kennedy and Eisenhower Expressways ( I-90/ I-94 and I-290), and Ida B. Well ...

, also known as the "Circle Interchange"

Iowa

*The "MixMasters" or "Mixers" in the greater Des Moines area: **East MixMaster: Eastern terminus of Interstate 235, and intersection of I-35 from the north and

I-80 Interstate 80 (I-80) is an east–west transcontinental freeway that crosses the United States from downtown San Francisco, California, to Teaneck, New Jersey, in the New York metropolitan area. The highway was designated in 1956 as one o ...

from the east **West MixMaster: Western terminus of Interstate 235, and intersection of I-35 to the south and

to the west *The “Systems Interchange” in Tiffin/Coralville: **Systems Interchange: The intersection of

to the west/east and

I-380 Interstate 380 may refer to: * Interstate 380 (California) Interstate 380 (I-380) is a short east–west auxiliary Interstate Highway in the San Francisco Bay Area of Northern California, connecting I-280 in San Bruno to US Route& ...

to the north/south

Kentucky

, also known as "Spaghetti Junction"

Massachusetts

Braintree Split The Braintree Split is the major interchange of Interstate 93 (I-93), U.S. Route 1 (US 1), and Route 3 in the South Shore of Massachusetts, on the city line between Braintree and Quincy. Traveling northbound, the routes merge into a three-wa ...

Leverett Circle Leverett Circle is an intersection in Boston, Massachusetts. Completely rebuilt during the Big Dig, it is no longer a rotary. It marks the confluence of Storrow Drive, Charles River Dam Road ( Northern Artery), Nashua Street, Charles Street, ...

South Bay Interchange The South Bay Interchange is a massive interchange in downtown Boston, Massachusetts, in the US. The interchange consists of Interstate 90, the Mass Pike Extension, and the Interstate 93 concurrency with US 1 and MA 3 south of the Thomas P ...

Michigan

* Ford–Lodge interchange, the first full freeway-to-freeway interchange in the United States, completed in 1955

Minnesota

* Can of Worms (Minnesota interchange)

Missouri

Grandview Triangle The 3-Trails Crossing Memorial Highway is the official name for an interchange in south Kansas City, Missouri that was once considered one of Missouri's most congested locations. Although it is known as Grandview Triangle, it is not located in ...

. After its reconstruction it handles 250,000 cars per day (in 2016), and is believed to be capable of handling 400,000 per day.

Nevada

* Centennial Bowl * Henderson Bowl *

Spaghetti Bowl (Las Vegas) The Spaghetti Bowl is the colloquial name for a freeway interchange in downtown Las Vegas, Nevada. It is the system interchange between Interstate 15, Interstate 515, U.S. Route 93 and U.S. Route 95, which also includes a service interchange wi ...

New Jersey

Newark Airport Interchange The Newark Airport Interchange is a massive interchange of Interstate 78, U.S. Route 1-9, U.S. Route 22, New Jersey Route 21, and Interstate 95 (the New Jersey Turnpike) at the northern edge of Newark Liberty International Airport in Newark, New ...

, the junction of

I-95 Interstate 95 (I-95) is the main north–south Interstate Highway on the East Coast of the United States, running from US Route 1 (US 1) in Miami, Florida, to the Houlton–Woodstock Border Crossing between Maine and the Canadia ...

( New Jersey Turnpike), I-78 ( Newark Bay Extension), US 1/9 (

US 1 U.S. Route 1 or U.S. Highway 1 (US 1) is a major north–south United States Numbered Highway that serves the East Coast of the United States. It runs from Key West, Florida, north to Fort Kent, Maine, at the Canadian border, making ...

and US 9), US 22, and Route 21 at the Newark Liberty International Airport

New Mexico

Big I Big I is the name of the freeway interchange where Interstate 25 and Interstate 40 intersect northeast of downtown Albuquerque, New Mexico. Description The Big I is a complex stack interchange located in central Albuquerque, New Mexico. ...

, in New Mexico. Its reconstruction was the largest public works project ever in New Mexico

New York

Bruckner Interchange The Bruckner Interchange is a complex interchange in the New York City borough of The Bronx in the United States. The junction connects four highways: the Bruckner, Cross Bronx, and Hutchinson River (or Whitestone) Expressways, and the Hutch ...

Can of Worms (interchange) The Can of Worms is the local name for the intersection of Interstate 490 (I-490), I-590, New York State Route 590 (NY 590), NY 96 (East Avenue), and University Avenue on the east side of Rochester, New York, in the United ...

, Rochester, New York *

Kew Gardens Interchange The Kew Gardens Interchange is a complex junction in Kew Gardens, in the center of the New York City borough of Queens serving nearly 600,000 vehicles daily. Description The Kew Gardens Interchange is located roughly midway between LaGuardia A ...

, Queens, New York City, serving nearly 600,000 vehicles daily. *

Oakdale Merge New York State Route 27 (NY 27) is a long state highway that runs east–west from Interstate 278 (I-278) in the New York City borough of Brooklyn to Montauk Point State Park on Long Island, New York. Its two most prominent com ...

Pennsylvania

* Pennsylvania Turnpike/Interstate 95 Interchange *

Eisenhower Interchange Dwight David "Ike" Eisenhower (born David Dwight Eisenhower; ; October 14, 1890 – March 28, 1969) was an American military officer and statesman who served as the 34th president of the United States from 1953 to 1961. During World War II, ...

* Interstate 279 Interchange * Mid-County Interchange * Mount Nittany Interchange * Throop Dunmore Interchange

Rhode Island

*Meshanticut Interchange

Texas

High Five Interchange The High Five Interchange is one of the first five-level stack interchanges built in Dallas, Texas. Located at the junction of the Lyndon B. Johnson Freeway ( Interstate 635, I-635) and the Central Expressway ( US Highway 75, US 7 ...

* Horseshoe Project

Virginia

* Bowers Hill Interchange *Pinners Point Interchange *

Springfield Interchange The Springfield Interchange, also known as the Mixing Bowl, is the interchange of Interstate 95, Interstate 395, and Interstate 495 in Springfield, Virginia, outside of Washington, D.C. The interchange is located at exit 57 on the Capital Beltw ...

Wisconsin

Hale Interchange The Hale Interchange is the major interchange between Interstate 41 (I-41), I-43, I-894, US Highway 41 (US 41), and US 45 in the Milwaukee, Wisconsin, southwest suburb of Greenfield, though it takes it name from the nearby comm ...

* Marquette Interchange * Mitchell Interchange * Zoo Interchange

References

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