![san mateo driving test routes san mateo driving test routes](https://cdn.shopify.com/s/files/1/0822/1627/files/Screen_Shot_2017-04-04_at_3.51.42_PM_2048x2048.png)
Towards the south of the bay lies the San Mateo-Hayward Bridge, "6.8 miles of silver ribbon stretching gracefully in stunning relief across the bay," boasts Caltrans. Less elegant than its sister bridges, upon completion it was dubbed by bay area residents the "roller coaster bridge." But, even in its austerity, the bridge glides effortlessly across the bay, linking travelers to the hills of Marin and the wine-growing regions of Sonoma and Napa Valley. However, the bridge suffered no serious damage. This bridge has the dubious distinction of being struck on several occasions by passing ships, including a World War II vessel and a Navy radar ship that struck the bridge twice as the ship spun around. Special caissons, watertight chambers, were designed for digging through the Bay floor in order to embed the bridge’s foundation in bedrock.Īs more people began making the East Bay their home, the Bay Bridge became the most heavily traveled bridge in the Bay Area, third busiest in the country, carrying more than 270,000 vehicles daily.Īt the north end of the bay is the cantilever-truss Richmond-San Rafael Bridge that stretches 5.5 miles.
![san mateo driving test routes san mateo driving test routes](http://www.machronicle.com/wp-content/uploads/2018/09/Fremont1.png)
![san mateo driving test routes san mateo driving test routes](https://drivingtestroute.com/lplates-with-dtr.jpg)
The eastern portion (a cantilever bridge) is currently being replaced with a self-anchored suspension bridge, which will be the longest of its type in the world.ĭue to the extraordinary depth of the water, ranging from 50 to 105 feet, and a bay floor thick with several layers of mud, the building of the bridge brought about new engineering challenges.
![san mateo driving test routes san mateo driving test routes](https://www.drivingtesttips.biz/wp-content/uploads/2014/05/driving-test-routes-sat-nav.jpg)
It is actually two different types of bridges-suspension on the San Francisco side and cantilever on the Oakland side-connected via tunnel through Yerba Buena Island. In 1955 the Bay Bridge earned the honor of being declared the seventh wonder of the world in 1955 by the American Society of Civil Engineers. The Golden Gate’s eastern cousin, the San Francisco-Oakland Bay Bridge, was completed in 1936. Ten years in planning due to formidable opposition, but only four years in actual construction, the Golden Gate Bridge brought the communities of San Francisco and Marin county closer together. To support the suspended roadway, two cables more than 7,000 feet in length, containing 70,000 miles of wire stretch over the top of the towers and are rooted in concrete piers on shore. The single-suspension span is anchored off the shores of the bay by twin towers that reach skyward 750 feet, and was once taller than any building in San Francisco. Opened in 1937, the bridge was built at a cost of $33 million and 10 workers’ lives. Designed with a number of factors in mind, each bridge has its own navigational clearance, foundation conditions, total length of structure, cost and aesthetics, according to the California Department of Transportation, or Caltrans.Ĭrossing the strait of the Golden Gate from San Francisco to the Marin headlands for 1.7 miles is the world-renowned Golden Gate Bridge, easily identified by its International Orange color. At its greatest width the bay measures 13 miles with depths reaching over 200 feet, just inside the Golden Gate yet, 70 percent of the bay is less than 12 feet deep.Īt points along the 50-mile length of the bay, five structures of engineering excellence, some considered impossible to build, span gracefully over 23 miles of the bay waters and allow travelers to visit San Francisco, the peninsula and the East Bay easily, quickly and safely. To the west of San Francisco sits the Pacific Ocean and due east through the strait of the Golden Gate lies the San Francisco Bay, extending 10 miles northeast to the San Pablo Bay entrance and 40 miles southeast into Palo Alto. It’s no wonder, given the diverse geography they must span. Collectively, these five bridges represent a gamut of engineering structures and designs. The San Francisco Bay is home to some of the most famous and magnificent bridges ever built, including the Golden Gate Bridge, San Francisco-Oakland Bay Bridge, Richmond-San Rafael Bridge, Hayward-San Mateo Bridge and the Dumbarton Bridge.