

The Historic Arroyo Seco Parkway (aka Pasadena Freeway) is a federal scenic byway, the only one in Southern California.
The parkway is located between the four-level interchange in downtown Los Angeles and Glenarm Street in Pasadena. A National Register eligible historic resource, the parkway is significant as the first freeway in the west. It represents a transitional time in history when parkways became freeways. Because of its engineering significance, it was designated a historic engineering landmark by the American Society of Civil Engineers in 1999.


A Caltrans video showing the Arroyo Seco Parkway being built in 1939 through 1952.
