Deep underneath the streets of San Francisco, workers have been busy constructing the Central Subway.
The $1.578 billion project will extend Muni's T-Third metro line, providing a 1.7-mile direct transit link between the Bayshore/Mission Bay neighborhoods and SoMa, downtown, and Chinatown.
In addition to a street-level station at 4th and Brannan, three subterranean subway stations are currently under construction: the future Yerba Buena/Moscone, Union Square/Market Street, and Chinatown stations.
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