The completion of the Transbay Tube's seismic retrofit exemplifies a significant enhancement to infrastructure, enabling it to withstand a 1,000-year earthquake event to ensure passenger safety.
The Transbay Tube, an engineering marvel, sits 135 feet below the Bay's surface, featuring patented earthquake-resistant joints for flexibility during seismic events, showcasing 20th-century engineering prowess.
BART's journey began in 1974, with the Transbay Tube connecting Oakland and San Francisco. Its impact on travel is profound, though most people remain unaware of its engineering.
BART operator Donna Wilkinson recalls her experience during the 1989 Loma Prieta quake, stating, 'We didn't feel a thing,' highlighting the tube's unique seismic resilience.
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