Proposal Would Turn San Francisco Bridge into a City

The Bay Line, a proposal for modular housing and other structures bolted to the now-unused San Francisco Bay Bridge. Design by Ronald Rael and Virginia San Fratello

San Francisco's Bay Bridge is being redone; a large portion of the bridge will remain unused, but in good shape. What can city planners do with this unique, unused space?

Science fiction writer William Gibson thought about the Bay Bridge in his 1993 novel Virtual Light:

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Bill Christensen catalogues the inventions, technology and ideas of science fiction writers at his website, Technovelgy. He is a contributor to Live Science.