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The first cloverleaf interchange patented in the US was by Arthur Hale, a civil engineer in Maryland, on February 29, 1916. [3] [4]A modified cloverleaf, with the adjacent ramps joined into a single two-way road, was planned in 1927 for the interchange between Lake Shore Drive and Irving Park Road in Chicago, Illinois, but a diamond interchange was built instead.
This was thought to be one of the most congested interchanges in the world at one time. Four Level Interchange (1949), US 101 & SR 110; Hollywood Split; Joe Colla Interchange; Judge Harry Pregerson Interchange, I-110 and I-105; Kellogg Interchange; MacArthur Maze; Newhall Pass interchange; Orange Crush interchange; The Fishhook, CA-1 and CA-17 ...
The Nesselwang interchange on Autobahn 7. In California, Caltrans currently has a policy [citation needed] that whenever cloverleaf interchanges between freeways and surface streets are being rebuilt, they are turned into parclo interchanges by removing some of the loop ramps (or in rare cases bridges will be added between adjacent loop ramps ...
Since then, the California Department of Transportation (Caltrans) has built eight more four-level stacks throughout the state of California, notably the Judge Harry Pregerson Interchange, as well as a larger number of three-level and four-level stack–cloverleaf hybrids (where the least-used left-turning ramp is built as a cloverleaf-like 270 ...
A three-level diamond interchange is a type of highway interchange where through traffic on both main roads is grade-separated from intersections which handle transferring traffic. [1] It is similar in design to a three-level stacked roundabout except for its use of (usually signalled) conventional intersections , and can be thought of as two ...
The Four Level Interchange (officially the Bill Keene Memorial Interchange) is the first stack interchange in the world. [1] Completed in 1949 and fully opened in 1953 at the northern edge of Downtown Los Angeles, California, United States, it connects U.S. Route 101 (Hollywood Freeway and Santa Ana Freeway) to State Route 110 (Harbor Freeway and Arroyo Seco Parkway).
View from a high ramp of the Joe Colla Interchange. The highway is a four level stack interchange.US-101 serves the first level of the complex. The second level marks the southern termini of both I-280 and I-680, as their primary lanes head into each other; I-280 then runs from the interchange southwesterly to Downtown San Jose, while I-680 runs northeasterly.
The Big X is the junction of three Interstate Highways, I-74, I-80, and I-280, near Colona, Illinois.The cloverleaf interchange is particularly confusing for I-74 and I-80 traffic because someone wishing to stay on either route must exit their highway to connect to the other highway.