The design for this project was commissioned by the Chicago Architecture Foundation as part of its Invisible City exhibition in 2003.
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Architect Ralph Johnson designed this project as an extension of his work on Skybridge, a residential tower which pioneered development in this area.
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The corridor for this vision extends from Hubbard's Cave (an underpass at Hubbard Street) to the Spaghettibowl (the I-290 interchange).
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Extending an idea from the Central Area Plan to bridge the expressway between Madison and Monroe, this plan proposes a whole series of park bridges over the Kennedy Expressway.
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Building masses are arranged to preserve skyline view corridors from the west.
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The geometry of the buildings and bridges was designed to channel clean air into the parks, and the plantings are intended to reduce carbon dioxide emissions from the expressway.
