California State Route 33

State Route 33 marker
State Route 33
Map
SR 33 highlighted in red
Route information
Maintained by Caltrans
Length289.699 mi[1] (466.225 km)
This route is broken into pieces, and the length does not reflect the overlaps that would be required to make the route continuous.
Existed1934–present
Tourist
routes
Jacinto Reyes Scenic Byway
Major junctions
South end US 101 in Ventura
Major intersections
North end I-5 near Tracy
Location
CountryUnited States
StateCalifornia
CountiesVentura, Santa Barbara, San Luis Obispo, Kern, Kings, Fresno, Merced, Stanislaus, San Joaquin
Highway system
SR 32 SR 34

State Route 33 (SR 33) is a north–south state highway in the U.S. state of California. It runs north from U.S. Route 101 in Ventura through the Transverse Ranges and the western side of the San Joaquin Valley to Interstate 5 at a point east of Tracy. SR 33 replaced part of U.S. Route 399 in 1964 during the "great renumbering" of routes. In the unincorporated sections of Kern County it is known as the West Side Highway. In addition, the California Legislature designated the entire Kern County portion as the Petroleum Highway in 2004. The southernmost portion in Ventura is a freeway known as the Ojai Freeway, while it is known as the Maricopa Highway from Ojai to Maricopa.

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