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  2. Tortilla Wall - Wikipedia

    en.wikipedia.org/wiki/Tortilla_Wall

    The Tortilla Wall View of Tortilla Wall at the Pacific Ocean Parts of the wall are built with concrete pillars (bollards) to prevent vehicle crash-throughs. The Tortilla Wall is a term given to a 14-mile (22.5 kilometer) section of United States border fence between the Otay Mesa border crossing in San Diego, California, and the Pacific Ocean.

  3. Yucca Corridor, Los Angeles - Wikipedia

    en.wikipedia.org/wiki/Yucca_Corridor,_Los_Angeles

    As part of a $200,000 traffic improvement project, eight-tenths of a mile of Yucca Street, between Cahuenga Boulevard and Highland Avenue, became Los Angeles's first "bike-friendly street" in 2012. At some intersections concrete bollards and signage directed automobiles to turn off the street while bicyclists were allowed to proceed straight ...

  4. Tetrapod (structure) - Wikipedia

    en.wikipedia.org/wiki/Tetrapod_(structure)

    A wave-dissipating concrete block is a naturally or manually interlocking concrete structure designed and employed to minimize the effects of wave action upon shores and shoreline structures, such as quays and jetties. One of the earliest designs is the Tetrapod, invented in 1950.

  5. Traffic cone - Wikipedia

    en.wikipedia.org/wiki/Traffic_cone

    In many countries such as Australia and in some American states such as California, traffic barrels are rarely seen; pillar-shaped moveable bollards are instead used where larger and sturdier warning or delineation devices are needed. Typically, bollards are 1,150 mm (45 in) high fluorescent orange posts with reflective sleeve and heavyweight ...

  6. New Bullards Bar Dam - Wikipedia

    en.wikipedia.org/wiki/New_Bullards_Bar_Dam

    New Bullards Bar Dam is a variable radius concrete arch dam constructed in the early 1960s in California on the North Yuba River.Located near the town of Dobbins in Yuba County, the dam forms the New Bullards Bar Reservoir, which can hold about 969,600 acre⋅ft (1.1960 × 10 9 m 3) of water.

  7. Constant-slope barrier - Wikipedia

    en.wikipedia.org/wiki/Constant-slope_barrier

    A constant slope barrier is a traffic barrier made of reinforced concrete and designed with a single slope that is used to separate lanes of vehicular traffic. Its advantages compared to more complex shapes arise because its performance is not as affected by changes in the height of the roadbed during repaving.

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