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 connects U.S. Route 101 (Hollywood Freeway and Santa Ana Freeway) to State Route 110 (Harbor Freeway and Arroyo Seco Parkway). In 2006, the interchange was officially renamed in the memory of Los Angeles traffic and weather reporter Bill Keene.
| Four Level Interchange | |
|---|---|
| Bill Keene Memorial Interchange | |
Four Level Interchange of Arroyo Seco Parkway, Harbor Freeway, Santa Ana Freeway and Hollywood Freeway, looking northeast in January 1999 | |
| Location | |
| Los Angeles, California | |
| Coordinates | 34°3′45″N 118°14′54.96″W |
| Roads at junction |
|
| Construction | |
| Type | Four-level stack interchange |
| Constructed | 1949 |
| Opened | 1953 |
| Maintained by | California Department of Transportation |
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