California State Route 66

State Route 66 marker
State Route 66
SR 66 highlighted in red, with relinquished portions in pink.
Route information
Maintained by Caltrans
Length32.321 mi[1][a] (52.016 km)
Existed1974 (from US 66)[citation needed]–present
Major junctions
West end SR 210 in La Verne
Major intersections SR 83 in Upland
I-15 in Rancho Cucamonga
East end I-215 in San Bernardino
Location
CountryUnited States
StateCalifornia
CountiesSan Bernardino, Los Angeles
Highway system
US 66 SR 67

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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