Eric Brown of Brown Design Studio proposes some solutions for retrofitting cul-de-sacs to reconnect them with the urban grid.
Brown explains that their are obvious limitations to what one can do when retrofitting a cul-de-sac:
"Often, our project is already entitled or zoned and the client does not wish to go back into that arena. Other times, much of the actual infrastructure is already in as is the case here.
Our one solution was to begin to define the former bottom of the bag into a multi-use place. Cars use this place but also kids, bikes and humans in general. It becomes a place that social things happen in as well as a simply visually pleasing space."
FULL STORY: What to do with a cul-de-sac?

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El Paso Wastewater Purification Facility Breaks Ground
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Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
North Jersey Transportation Planning Authority (NJTPA)
Economic & Planning Systems, Inc.
UCLA Lewis Center for Regional Policy Studies
Mpact (formerly Rail~Volution)
Chaddick Institute at DePaul University
City of Piedmont, CA
Great Falls Development Authority, Inc.
HUDs Office of Policy Development and Research