Transbay Transit Center Completes Excavation of More Than 600,000 Cubic Yards of Soil

Today, the Transbay Joint Powers Authority (TJPA) reached a significant project milestone – completing excavation for the Transbay Transit Center.

“This brings us another step closer to the opening of the ‘Grand Central Station of the West,’ said Maria Ayerdi-Kaplan, Executive Director of the Transbay Joint Powers Authority. “The Transbay Project has revitalized San Francisco’s South of Market neighborhood and will continue to generate economic growth throughout the region. Construction of the new Transbay Transit Center will strengthen the Bay Area’s position as a national leader in sustainable, transit-oriented development.”

Today’s milestone marks the end of an excavation process which removed 640,000 cubic yards of soil from a work site that spans four city blocks and is among the largest excavations in the City’s history.  The excavation for the Transit Center is the equivalent of 120 Olympic size swimming pools or has enough room to stack 50,400 Mini Coopers.  The TJPA recycled much of the excavated soil or sold it for reuse on other construction projects while bay mud or soil with high clay content went to clean landfills.

With the soil removed, crews are free to continue laying the five-foot thick layer of cement that will serve as the foundation for the future Transbay Transit Center.  The foundation, the pouring for which began in September, will ultimately require 60,000 cubic yards of concrete.  Once the foundation is complete, the TJPA will begin erecting the structural steel for the Transit Center.

“After more than three years of hard work below grade, we are excited to bring this building to life as the steel framework emerges from the excavation,” said Executive Director Ayerdi-Kaplan.

The Transbay Transit Center, located between Beale, Mission, Second, and Howard Streets, is a revolutionary transportation facility.  When the Transit Center opens in late 2017, it will connect eight Bay Area counties and is designed to accommodate 11 transit systems, including Caltrain and future intercity rail.  The emerging South of Market neighborhood, focused on the new Transit Center, will become the new heart of downtown San Francisco.  To learn more about the Transbay Project, please visit our website at www.TransbayCenter.org

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