My article “Off the Grid… and Back Again? The Recent Evolution of American Street Network Planning and Design” has been published by the Journal of the American Planning Association and won the 2020 Stough-Johansson Springer Award for best paper. It identifies recent nationwide trends in American street network design, measuring how urban planners abandoned the grid and embraced sprawl over the 20th century, but since 2000 these trends have rebounded, shifting back toward historical design patterns.
This study measures the entropy (or disordered-ness) of street bearings in each street network, along with each city’s typical street segment length, average circuity, average node degree, and the network’s proportions of four-way intersections and dead-ends. It also develops a new indicator of orientation-order that quantifies how a city’s street network follows the geometric ordering logic of a single grid. These indicators, taken in concert, reveal the extent and nuance of the grid.
A pattern which prevents us from resolving our conflicting forces leaves us almost perpetually in a state of tension.
For, if we live in a world where work is separated from family life, or where courtyards turn us away, or where windows are merely holes in the wall, we experience the stress of these inner and conflicting forces constantly. We can never come to rest. We are living then, in a world so made, so patterned, that we cannot, by any stratagem, defeat the tension, solve the problem, or resolve the conflict. In this kind of world the conflicts do not go away. They stay within us, nagging, tense…The build-up of stress, however minor, stays within us. We live in a state of heightened alertness, higher stress, more adrenaline, all the time.