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.
Tool-building is an essential but poorly incentivized component of academic geography and social science more broadly. To conduct better science, we need to
build better tools.
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.
They mourn, but smile at length; and, smiling, mourn:
The tree will wither long before it fall:
The hull drives on, though mast and sail be torn;
The roof-tree sinks, but moulders on the hall
In massy hoariness; the ruined wall
Stands when its wind-worn battlements are gone;
The bars survive the captive they enthral;
The day drags through though storms keep out the sun;
And thus the heart will break, yet brokenly live on.