Back Interstate 210 (Kalifornien) German Interestatal 210 y Ruta Estatal 210 Spanish Interstate 210 (Californie) French Interstate 210 Dutch Foothill Freeway SIMPLE 210号州际公路和210号加利福尼亚州州道 Chinese
.svg)  Interstate 210 and State Route 210 | ||||
|---|---|---|---|---|
| Foothill Freeway | ||||
 I-210 highlighted in red; SR 210 in purple | ||||
| Route information | ||||
| Auxiliary route of I-10 | ||||
| Maintained by Caltrans | ||||
| Length | 85.31 mi[1][2] (137.29 km) Length includes the entire Route 210. | |||
| History | Route proposed 1933 Designated 210 in 1964 | |||
| Component highways |  I-210 from Los Angeles to Glendora SR 210 from Glendora to Redlands | |||
| Major junctions | ||||
| West end |  I-5 in Los Angeles | |||
 SR 330 near Highland | ||||
| East end |  I-10 in Redlands | |||
| Location | ||||
| Country | United States | |||
| State | California | |||
| Counties | Los Angeles, San Bernardino | |||
| Highway system | ||||
| ||||
The Foothill Freeway is a freeway in the Los Angeles metropolitan area, California, United States, running from the Sylmar district of Los Angeles east to Redlands. The western segment is signed as Interstate 210 (I-210) from its western end at I-5 to SR 57 in Glendora, while the eastern segment is signed as State Route 210 (SR 210) to its eastern terminus at I-10. Under the California Streets and Highways Code, the entire Foothill Freeway is legally referred to as Route 210.
The Foothill Freeway name is a reference to Foothill Boulevard and the San Gabriel Mountains, both of which the freeway runs parallel to for most of its length. The freeway follows the foothills of these mountains, connecting the northeastern suburbs of Los Angeles with the Inland Empire. Historically, the Foothill Freeway spanned multiple numerical designations. Additionally, the I-210 designation has changed routings, previously including a portion of what is now the Orange Freeway (SR 57). East of Pasadena, the Foothill Freeway parallels, and in some parts replaced, the route of former U.S. Route 66.
The portion between I-5 and SR 259 in San Bernardino was up to Interstate Highway standards by 2007, but the eastern segment remains signed as a state route because the portion between SR 259 and I-10 had not met those standards.[3] On February 26, 2020, construction in each direction took place to complete the standards required. The three-year project added lanes from Sterling Avenue in San Bernardino to San Bernardino Avenue in Redlands. Although construction was completed in September 2023, the eastern end currently remains "Route 210".[4][5]
- ^ California Department of Transportation. "State Truck Route List". Sacramento: California Department of Transportation. Archived from the original (XLS file) on September 5, 2015. Retrieved June 30, 2015.
- ^ Cite error: The named reference
bridgelogwas invoked but never defined (see the help page). - ^ "Why isn't the new section of the 210 Freeway called Interstate 210?". Daily Bulletin. September 16, 2018. Retrieved July 2, 2024.
- ^ Cano, Alejandro (February 21, 2020). "Project to add two more lanes to SR-210 finally ready to start". Redlands News. Retrieved April 17, 2021.
- ^ "210 Freeway project that adds a lane welcomed at Highland ceremony". July 22, 2023.