From dezeen:

Thomas Heatherwick has released images of a proposal for a garden to span the River Thames on a new pedestrian bridge:

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The design was developed by Heatherwick Studio after Transport for London awarded it a tender to develop ideas for improving pedestrian links across the river.

Lovely, but a fantasy.  This is not what a ped bridge would look like in use when built in one of the largest, busiest cities in the world:

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