Criticism of the grid and its difficulties was voiced from the start. Olmsted himself noted several problems that arose from the fixed dimensions of the city’s blocks: the impossibility of producing sites for very large buildings and campuses; issues of daylighting; the difficulty of creating systems of formal and symbolic hierarchy within the field of uniformity.
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.
Recently I’ve had a few opportunities to use code to create design. In two of my bigger projects at The Wall Street Journal, writing code has led to new ideas. Problems that typically plague early designs — e.g. “how does this look with real content?” — are easy to solve. By exploring visual ideas directly in code, I’ve started to see the amazing potential of code as a design tool.