BeyondChron dons its hard hat today to talk about the Central Subway, answering three questions: 1) Whither the North Beach extension? 2) Why dig such a deep tunnel? and finally 3) What's up with Geary light rail? The answers, in 60 seconds: 1) It might be considered the third phase of the T-Third, with Central Subway the second phase, but issues with the way the project was marketed to the feds have complicated the matter. 2) The Central Subway tunnel goes up to 100 feet deep because Muni didn't want to disrupt traffic for months while digging a shallow tunnel from the street level, and 3) Ehhhhh. [BeyondChron]
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