The epicenter was near Loma Prieta, which is a peak in the Santa Cruz mountains. A strong-motion seismograph gave an acceleration reading of 0. The shock was centered in The Forest of Nisene Marks State Park in Santa Cruz County, approximately 10 mi (16 km) northeast of Santa Cruz on a section of the San Andreas Fault System and. on Interstate Route 880 in Oakland; 42 people were killed. A section of the Bay Bridge connecting San Francisco and Oak- land also collapsed, resulting in one death. After. During the quake, a double-deck section of the Nimitz Freeway (called the Cypress Street Viaduct) collapsed, killing 42 people, part of the Bay Bridge collapsed, killing one person, and many buildings in both Oakland and San Francisco crumpled. It had a moment magnitude of 6. The duration was 15 to 20 seconds. The Nimitz Freeway, in Oakland, California, United States, experienced catastrophic damage during the 1989 Loma Prieta Earthquake.
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