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.
Thus the first and most important stratagem adopted to cheapen construction was the squaring and turning of components in order to eliminate offering up and individual fitting. The flatness, straightness, and squareness which more than any other characteristic distinguish man's construction from the works of God, derive from economy. We see the mark of economy in every building of squared masonry however magnificent it may be. Only the few remnants of ancient polygonal masonry remind us that the pattern of stone work where each stone is individually fitted can be very different from the cheap squared pattern to which we are accustomed."