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  2. List of tunnels in California - Wikipedia

    en.wikipedia.org/wiki/List_of_tunnels_in_California

    11th Street Tunnel, under the Oakland Museum of California in Oakland; Caldecott Tunnel, quad tunnels, SR 24 beneath Grizzly Peak between Orinda and Oakland; Northbrae Tunnel, former East Bay Electric Lines rail tunnel, current road tunnel joining Solano Avenue and Sutter Street beneath Marin Circle, Berkeley

  3. List of tunnels documented by the Historic American ...

    en.wikipedia.org/wiki/List_of_tunnels_documented...

    Big Oak Flat Road Tunnel No. 3 Extant 1938 1991 New Big Oak Flat Road Mountain spur Yosemite Village: Mariposa: CA-105: Wawona Tunnel [a] Extant 1932 1991 SR 41 (Wawona Road) Turtleback Dome: Yosemite Village: Mariposa

  4. Caldecott Tunnel - Wikipedia

    en.wikipedia.org/wiki/Caldecott_Tunnel

    The east–west tunnel is signed as a part of California State Route 24 and connects Oakland to central Contra Costa County.It is named after Thomas E. Caldecott (1878–1951), who was mayor of Berkeley in 1930–1932, a member of the Alameda County Board of Supervisors in 1933–1945, and president of Joint Highway District 13, which built the first two bores.

  5. Posey and Webster Street Tubes - Wikipedia

    en.wikipedia.org/wiki/Posey_and_Webster_Street_Tubes

    Route map The Posey and Webster Street Tubes are two parallel underwater tunnels connecting the cities of Oakland and Alameda, California , running beneath the Oakland Estuary . Both are immersed tubes , constructed by sinking precast concrete segments to a trench in the Estuary floor, then sealing them together to create a tunnel.

  6. Category:Tunnels in California - Wikipedia

    en.wikipedia.org/wiki/Category:Tunnels_in_California

    Road tunnels in California (21 P) Pages in category "Tunnels in California" The following 4 pages are in this category, out of 4 total.

  7. Portal:California roads - Wikipedia

    en.wikipedia.org/wiki/Portal:California_Roads

    California State Routes are managed by Caltrans and designated by the California State Legislature. The state route's signs are in the shape of a miner's spade to honor the California Gold Rush . Each state highway in the U.S. state of California is assigned a Route (officially State Highway Route ) number in the Streets and Highways Code ...

  8. File:California-3-way.svg - Wikipedia

    en.wikipedia.org/wiki/File:California-3-way.svg

    English: "California" 3-way switch. Alternative to the conventional connection for a three-way switch. The lamp shell is never connected to the live terminal. A second lamp can be connected at A to light the end of a long corridor or as a pilot lamp to indicate the light in an outbuilding is left on.

  9. Burro Schmidt Tunnel - Wikipedia

    en.wikipedia.org/wiki/Burro_Schmidt_Tunnel

    The historical Burro Schmidt Tunnel is located in the El Paso Mountains of the northern Mojave Desert, in eastern Kern County, southern California. It is a 0.5-mile (0.80 km) mining tunnel dug with hand tools and dynamite over a 38-year period by William "Burro" H. Schmidt (1871–1954). [2] in the El Paso Mountains of eastern California.