California State Route 123
highway in California
State Route 123 (SR 123) is a 7.39-mile (11.89 km) state highway in the U.S. state of California in the San Francisco Bay Area. Named San Pablo Avenue for almost its entire length except for its northernmost 0.10 miles (0.16 km), SR 123 is a major north–south state highway along the flats of the urban East Bay. Route 123 runs between Interstate 580 in Oakland in the south and Interstate 80 at Cutting Boulevard in Richmond in the north. San Pablo Avenue itself, a portion of Historic US 40, continues well past the SR 123 designation south to Downtown Oakland and north to Crockett.
Route description
Route 123 is defined in section 423 of the California Streets and Highways Code, and that the highway is "from Route 580 at San Pablo Avenue in Oakland to Route 80 in Richmond at Cutting Boulevard".
SR 123 is a four-lane boulevard with a median strip for its entire length. Its southern terminus is at the underpass of Interstate 580 in Oakland. Going north, it passes through the cities of Emeryville, Berkeley, Albany, and El Cerrito. It briefly turns on Cutting Boulevard before entering Richmond at its northern terminus under Interstate 80.
SR 123/San Pablo Avenue does not directly intersect with I-580 in Oakland, so drivers are instructed to get onto I-580 east via 35th Street, or I-80 east/I-580 west via West MacArthur Boulevard.
“California State Route 123” enters the record as highway in California. Crown Archives preserves that source wording while asking what California, State and Route can confirm, complicate or overturn.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Sep 7, 2026. The linked authority identifier is Q758137. Authority coordinates are 37.906, -122.305. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank.
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This entry incorporates text from “California State Route 123” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.