A peek at San Francisco's $1.6B Central Subway Project

03/10/2014 | San Francisco Chronicle (free content)

The $1.6 billion Central Subway Project in San Francisco is on budget and on schedule to start operations in 2019, according to this article. Mom Chung and Big Alma, two 750-ton tunnel-boring machines, are digging 20-foot-wide tunnels under the city. Photos and video show the work in progress.

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San Francisco Chronicle (free content)

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