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Keep Blocks Small

Intersection density is what makes cities safe and walkable

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Abstract

ON THE LEFT BELOW IS PORTLAND, OR— famously walkable, and famous (to planners) for its tiny 200-foot blocks. On the right is Salt Lake City—famously less walkable, with its huge 600-foot blocks. So different are these street networks that it is hard to imagine that they were laid out in the same era (mid-1800s). While each has its benefits, the advantages of Salt Lake City do not include the safety and comfort of its pedestrians.

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Notes

  1. 1.

    Laurence Aurbach, “The Power of Intersection Density,” PedShed (blog) (May 27, 2010), http://pedshed.net/?p=574.

  2. 2.

    Ibid.

  3. 3.

    Wesley E. Marshall, Norman W. Garrick, “Street Network Types and Road Safety: A Study of 24 California Cities,” Urban Design International, Basingstoke, vol.15, no.3 (Autumn 2010): 133–47.

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© 2018 Jeff Speck

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Speck, J. (2018). Keep Blocks Small. In: Walkable City Rules. Island Press, Washington, DC. https://doi.org/10.5822/978-1-61091-899-2_37

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