The Four Level 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
Four Level Interchange of Arroyo Seco Parkway, Harbor Freeway, Santa Ana Freeway and Hollywood Freeway, looking northeast in January 1999
Four Level Interchange, 1966
The California Department of Transportation, branded as Caltrans, is an executive department of the U.S. state of California. Headquartered in Sacramento, it is part of the cabinet-level California St
Four Level Interchange
…Harbor Freeway) US 101 (Hollywood Freeway / Santa Ana Freeway) Construction Type Four-level stack interchange Constructed 1949 Opened 1953 Maintained by California Department of Transportation The Four Level Interchange (officially the Bill Keene Memorial Interchange) is the first stack interchange in the world. Completed in 1949 and fully…
Caltrans headquarters in Sacramento
The Bureau of Highways with their buckboard wagon in Riverside County, 1896
Caltrans District 7 Headquarters in Los Angeles, designed by Thom Mayne.
Caltrans District 8 Headquarters in San Bernardino