 State Route 66 | ||||
|---|---|---|---|---|
 SR 66 highlighted in red, with relinquished portions in pink. | ||||
| Route information | ||||
| Maintained by Caltrans | ||||
| Length | 32.321 mi[1][a] (52.016 km) | |||
| Existed | 1974 (from US 66)[citation needed]–present | |||
| Major junctions | ||||
| West end |  SR 210 in La Verne | |||
 SR 83 in Upland I-15 in Rancho Cucamonga | ||||
| East end |  I-215 in San Bernardino | |||
| Location | ||||
| Country | United States | |||
| State | California | |||
| Counties | San Bernardino, Los Angeles | |||
| Highway system | ||||
| ||||
State Route 66 (SR 66) is a state highway in the U.S. state of California that runs along a section of old U.S. Route 66 in Los Angeles and San Bernardino counties. It goes from State Route 210 in La Verne east to Interstate 215 in San Bernardino, passing through Claremont, Upland, Rancho Cucamonga, Fontana and Rialto along Foothill Boulevard. In San Bernardino, it is the part of Fifth Street west of H Street (at the Interstate 215 interchange).
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