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.
The open web is much like emergent, unplanned cities — it happens at the scale of the individual, it allows for unexpected creativity, it gives agency to anyone (well, anyone with sufficient technical knowledge) to shape their own spaces. On the other hand, the platforms that now dominate much of the web experience are more evocative of Moses’s planned cities—they often occur at the scale of the corporation, and have rigid, predictable constraints for how individuals can behave and express themselves.