 | This articlerelies excessively onreferences toprimary sources. Please improve this article by addingsecondary or tertiary sources. Find sources: "Foothill Boulevard" Southern California – news ·newspapers ·books ·scholar ·JSTOR(July 2025) (Learn how and when to remove this message) |
| Part of |  SR 66 between theSR 210 inLa Verne and 5th Street inSan Bernardino |
|---|---|
| Namesake | The foothills of theSan Gabriel andSan Bernardino Mountains |
| Maintained by | Caltrans and local jurisdictions |
| Tourist routes |  Historic US 66 |
| Location | Los Angeles andSan Bernardino counties, California, United States |
| West end |   I-5 /SR 14 inNewhall Pass |
| Major junctions |
|
| East end | 5th Street inSan Bernardino |
Foothill Boulevard is a major street in thecity andcounty of Los Angeles, as well as anarterial road in thecity andcounty of San Bernardino, stretching well over 60 miles (97 km) in length, with some notable breaks along the route. Like its name implies, Foothill Boulevard runs across the foothills of theSan Gabriel andSan Bernardino Mountains.[1]
For much of its length, Foothill Boulevard is thehistoric Route 66, so many diners and other establishments along the road have been refurbished in a 1950s style, or otherwise trade on the association with Route 66.[2] Segment of Foothill Boulevard are also designated as the aptly numberedState Route 66.
Foothill Boulevard starts off inNewhall Pass in theSylmar district of the city of Los Angeles atSierra Highway near the southern terminus ofState Route 14. Foothill Boulevard is a two-lane road through Newhall Pass, parallelingInterstate 5 (I-5) truck lanes until its intersection withBalboa Boulevard, where it becomes a four-lane road for the remainder of its length. At the I-5/I-210 interchange, Foothill Boulevard heads southeast parallel to theFoothill Freeway, bypassing the city ofSan Fernando, enteringLake View Terrace south of the I-210/SR 118 interchange. SR 118 formerly ran along Foothill Boulevard from the I-210/SR 118 interchange untilPasadena. In 1974, the current alignment of Interstate 210 was completed, and the only remaining portion of the Foothill Boulevard was the unsigned freeway over theArroyo Seco in Pasadena.[citation needed]
Foothill Boulevard leaves theSan Fernando Valley, passing through theSunland andTujunga neighborhoods in the northwesternCrescenta Valley. It then enters the Crescenta Highlands neighborhood ofGlendale and serves as a main street in the northGlendale area. Then it enters the unincorporated area ofLa Crescenta-Montrose, California, and it serves as the main street through the valley. Upon crossing the Verdugo Wash, it enters the city ofLa Cañada Flintridge. In La Cañada Flintridge, it has junctions withOcean View Boulevard,Chevy Chase Drive, and Gould Avenue. After Gould Avenue it has an interchange withI-210 and ends at the Oak Grove Drive at the La Cañada Flintridge–Pasadena line.
The traversable route between the Newhall Pass–La Cañada Flintridge and Pasadena–Monrovia segments is along Oak Grove Drive, Woodbury Road,Fair Oaks Avenue, and Walnut Street inPasadena.
.JPG)
Foothill Boulevard resumes inPasadena at its intersection with Walnut Street and Greenwood Avenue. It then has an intersection with Craig Avenue. It passes throughLamanda Park, where it has intersections withSierra Madre Boulevard, Altadena Drive, and San Gabriel Boulevard. It has direct freeway ramps to or from I-210 west atRosemead Boulevard (SR 19), Quigley Avenue, and Michillinda Avenue at the line at the Pasadena–East Pasadena–Arcadia tripoint; and Baldwin Avenue in Arcadia. In Arcadia, the street has an intersection with Santa Anita Avenue before entering Monrovia. In Monrovia, it has intersections with Mayflower Avenue, Myrtle Avenue, and California Avenue, before meeting its eastern terminus at the intersection of Mountain Avenue and Deodar Lane. The segment of Foothill Boulevard between Santa Anita Avenue in Arcadia to Shamrock Avenue in Monrovia follows the 1926–1940 alignment ofU.S. Route 66 (US 66).
The traversable route between the Pasadena–Monrovia and Irwindale–Azusa segments is along Mountain Avenue andHuntington Drive in Monrovia,Duarte, andIrwindale.
The Azusa segment of Foothill Boulevard Begins atHuntington Drive at theSan Gabriel River at theIrwindale–Azusa line. The route then curves to the east and then has an intersection with Irwindale Avenue in Irwindale before reentering Azusa. East of Cerritos Avenue, Alosta Avenue forks southeast to follow the Historic US 66 alignment, while Foothill Boulevard meets its eastern terminus at Citrus Avenue at the Azusa–Glendora line.
For the traversable route bridging Foothill Boulevard's third gap, Glendora renamed its segment of Alosta Avenue as "Route 66", explicitly marking the city's portion of the Historic US 66 alignment.
The final segment beings at Amelia Avenue on the Glendora–San Dimas line, where Glendora's "Route 66" street designation turns back into Foothill Boulevard. It then has an intersection with San Dimas Avenue, which heads south to anSR 210. Foothill Boulevard the intersects with Walnut Avenue before meeting San Dimas Canyon Road west of the San Dimas–La Verne line.
In La Verne, Foothill Boulevard assumes the designationSR 66 after it intersects with SR 210. SR 66/Foothill Boulevard then heads southeast before enteringPomona and turning due east. The highway continues to Towne Avenue at the Pomona–Claremont line where state maintenance of the western segment of SR 66 officially ends. Foothill Boulevard then passes passes byClaremont Colleges before crossing intoUpland in San Bernardino County.
In Upland, Foothill Boulevard passes byCable Airport to the south, continuing due east. The highway intersects Euclid Avenue (SR 83) before enteringRancho Cucamonga. Foothill Boulevard continues east intoRialto, where the SR 66 designation resumes.
SR 66/Foothill Boulevard entersSan Bernardino at Pepper Avenue. Foothill Boulevard then ends at Nuñez Park, where it splits into 4th Street and 5th Street/SR 66.
