| Cypress Street Viaduct |
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Information AboutCypress Street Viaduct |
| CATEGORIES ABOUT CYPRESS STREET VIADUCT | |
| history of california | |
| history of oakland, california | |
| san francisco bay area freeways | |
| transportation in oakland, california | |
| viaducts | |
| demolished highways | |
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The Cypress Street Viaduct was a 2-kilometer long, raised two-tier, multi-lane (five lanes per deck) freeway constructed of reinforced concrete that was once part of Interstate 880 in Oakland, California . It was located along Cypress Street between 7th Street and Interstate 80 in the West Oakland neighborhood. It officially opened to traffic on June 11 , 1957 and was in use until the Loma Prieta Earthquake occurred on October 17 , 1989 when much of the upper tier collapsed onto the lower tier resulting in 42 casualties. When in use, the upper tier was used by southbound traffic, and the lower tier was used by northbound traffic. Some sections of the Cypress Steet Viaduct were supported by two columns on either side, but some sections were only supported beneath by a single supporting column. It was built on filled land, which is highly susceptible to Soil Liquefaction during an Earthquake . The viaduct was torn down, and the corridor became known as Mandela Parkway with a landscaped median where the structure once stood. Interstate 880 was rerouted to loop around the area using a more conventional divided highway design. {Link without Title} SIMILAR STRUCTURES DAMAGED BY EARTHQUAKES EXTERNAL LINKS |
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