State Route 66 (SR 66) is a

state highway A state highway, state road, or state route (and the equivalent provincial highway, provincial road, or provincial route) is usually a road that is either Route number, numbered or maintained by a sub-national state or province. A road numbered ...

in the U.S. state of

California California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...

that runs along a section of former U.S. Route 66 (US 66) in

Los Angeles Los Angeles, often referred to by its initials L.A., is the List of municipalities in California, most populous city in the U.S. state of California, and the commercial, Financial District, Los Angeles, financial, and Culture of Los Angeles, ...

and

San Bernardino San Bernardino ( ) is a city in and the county seat of San Bernardino County, California, United States. Located in the Inland Empire region of Southern California, the city had a population of 222,101 in the 2020 census, making it the List of ...

counties. It goes from SR 210 in La Verne east to Interstate 215 (I-215) in

, passing through

Claremont Claremont may refer to: Places Australia *Claremont, Ipswich, a heritage-listed house in Queensland * Claremont, Tasmania, a suburb of Hobart * Claremont, Western Australia, a suburb of Perth * Town of Claremont, Perth * Claremont Airbase, an ...

Upland Upland or Uplands may refer to: Geography *Hill, an area of higher land, generally *Highland, an area of higher land divided into low and high points *Upland and lowland, conditional descriptions of a plain based on elevation above sea level *I ...

Rancho Cucamonga Rancho Cucamonga was a Ranchos of California, Mexican land grant in present-day San Bernardino County, California, given in 1839 to the dedicated soldier, smuggler and politician Tiburcio Tapia by Mexican governor Juan Bautista Alvarado. The gra ...

Fontana Fontana may refer to: Places Italy *Fontana Liri, comune in the Province of Frosinone *Fontanafredda, comune in the Province of Pordenone * Fontanarosa, comune in the Province of Avellino *Francavilla Fontana, comune in the Province of Brindisi ...

and

Rialto The Rialto is a central area of Venice, Italy, in the ''sestiere'' of San Polo. It is, and has been for many centuries, the financial and commercial heart of the city. Rialto is known for its prominent markets as well as for the monumental Ria ...

along Foothill Boulevard. In San Bernardino, it is the part of Fifth Street west of H Street (at the I-215 interchange).

Route description

The route begins as Foothill Boulevard at the interchange with SR 210 in the city of La Verne. SR 66 heads southeast for a few miles before entering Pomona and turning due east. The highway continues into the city of

, passing by

Claremont Colleges The Claremont Colleges (known colloquially as the 7Cs) are a consortium of seven private university, private institutions of higher education located in Claremont, California, United States. They comprise five undergraduate colleges (the 5Cs)� ...

, before crossing into

San Bernardino County San Bernardino County ( ), officially the County of San Bernardino and sometimes abbreviated as S.B. County, is a county located in the southern portion of the U.S. state of California, and is located within the Inland Empire area. As of th ...

. In Upland, SR 66 passes by Cable Airport to the south, continuing due east. The highway intersects SR 83 before entering

, where state maintenance of SR 66 currently ends. Foothill Boulevard continues east through Rancho Cucamonga through an interchange with

I-15 I15 may refer to: * Interstate 15, a north–south Interstate Highway in the United States of America * Polikarpov I-15, a Soviet fighter aircraft * I15 (band), a band * , of the Imperial Japanese Navy * Älvsborg Regiment The Älvsborg Regiment ...

before entering

, and passing well north of the

California Speedway Auto Club Speedway (known as California Speedway before and after the 2008–2023 corporate sponsorship by the Automobile Club of Southern California) was a , D-shaped oval superspeedway in unincorporated San Bernardino County, California, ne ...

. Foothill Boulevard continues east into

, where the SR 66 designation resumes. SR 66 continues east into

, before curving to the north as 5th Street and terminating at I-215 south of downtown. California's legislature has relinquished state control of the segment from the Pomona–Claremont line east to the Fontana–Rialto line, and turned it over to local control. SR 66 is part of the

California Freeway and Expressway System The California Freeway and Expressway System is a system of existing or planned freeways and expressways in the U.S. state of California. It encompasses both state highways and federal highways in California. It was defined by Article 2 (comme ...

, although it is neither a freeway nor an expressway. SR 66 is part of the National Highway System,
a network of highways that are considered essential to the country's economy, defense, and mobility by the

Federal Highway Administration The Federal Highway Administration (FHWA) is a division of the United States Department of Transportation that specializes in highway transportation. The agency's major activities are grouped into two programs, the Federal-aid Highway Program a ...

History

As a state route, SR 66 was added to the state highway system in the 1964 state highway renumbering, from SR 30 around San Dimas to San Bernardino. By 2013, the portion from east of Pomona to the eastern boundary of Rialto had been relinquished to the various cities that the route passed through.

Major intersections

Notes

References

External links