 The El Arco arch sign on Whittier Blvd in East Los Angeles; seen in June 2013. | |
| Maintained by | Local jurisdictions (The section between Interstate 605 and Harbor Boulevard is maintained by Caltrans) |
|---|---|
| West end | 6th Street at the Los Angeles River |
| Major junctions |  SR 60 in Los Angeles I-710 in East Los Angeles SR 19 in Pico Rivera I-605 in Whittier CR N8 in Whittier SR 39 in La Habra (The section between Beach and Harbor Boulevards carries SR 39)
Harbor Boulevard in La Habra |
| East end | Puente Street in Brea |
Whittier Boulevard is an arterial street that runs from the Los Angeles River (where it continues into Downtown Los Angeles as 6th Street) to Brea, California. The street is one of the main thoroughfares in both Whittier and East Los Angeles. At various times, portions of Whittier Boulevard carried the designation of U.S. Route 101. Whittier Boulevard also carries a portion of El Camino Real. Its west section leading from the Sixth Street Viaduct was demolished in 2016; the replacement was officially opened in 2022.. Currently, Whittier Boulevard carries two Caltrans controlled highways. The portion between Rosemead Boulevard (SR 19) and Beach Boulevard (SR 39) carries State Route 72 and the portion between Beach and Harbor Boulevards carries California State Route 39. The portion of State Route 72 up to State Route 19 was relinquished back to Pico Rivera in the early 2000s and the portion of State Route 72 between State Route 19 and Downey Road was deleted from SR 72 in 1992.
In Los Angeles, Whittier Boulevard was known as Stephenson Avenue before 1920. The portion in what is now Whittier was known as County Road in Whittier's early days.