Barrier Effects of Freeways for Pedestrian and Bicycle Travel
Policy Brief

Program Area(s):

Access to Opportunities

Date: November 7, 2022

Author(s): Adam Millard-Ball, Benjamin Silverstein, Sierra Stevenson, Chris Barrington-Leigh

Abstract

Limited-access freeways physically divide urban neighborhoods, creating “severance” or “barrier effects.” In these cases, streets that would otherwise be continuous dead-end at a freeway. Unless the freeway is elevated or in a tunnel, crossings are limited to dedicated bridges or underpasses, often creating lengthy detours for pedestrians and cyclists and making walking and cycling less feasible for many trips.

About the Project

The racist legacy of freeways has come into stark focus in the past year. This research focuses on one specific impact of freeways: neighborhood severance. Freeways disrupt the neighborhood street […]