Measuring Urban Form: Is Portland Winning the War on Sprawl?

Yan Song · G. A. van der Knaap

490 citations0/0 files storedJournal of the American Planning Association

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Urban Design and Spatial Analysis Regional Economics and Spatial Analysis Urban Transport and Accessibility

Abstract

Although many have written about urban sprawl, few have sought to measure it. In this article, we present several quantitative measures of urban form and compute these for neighborhoods of varying age in Washington County, the western portion of the Portland, Oregon, metropolitan area. Our results suggest (1) neighborhoods in Washington County have increased in single-family dwelling unit density since the 1960s; (2) internal street connectivity and pedestrian access to commercial areas and bus stops have improved since the early 1990s; (3) external connectivity continues to decline; and (4) the mixing of land uses remains limited. We conclude that while several measures appear to be improving, Portland's war on sprawl is not yet won.

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References

2001Wrestling Sprawl to the Ground: Defining and measuring an elusive concept 1975Transportation research 2001The Built Environment and Human Activity Patterns: Exploring the Impacts of Urban Form on Public Health 1995Commuting in Transit Versus Automobile Neighborhoods 1998Does neighborhood design influence travel?: A behavioral analysis of travel diary and GIS data 2002Book Review: Who Sprawls Most? How Growth Patterns Differ Across the U.S. William Fulton, Rolf Pendall, Mai Nguyen, and Alicia Harrison. Washington, DC: The Brookings Institution, July 2001 (www.brook.edu/urban/fulton%2d pendall.htm)1997Walkable Suburbs?: An Evaluation of Neotraditional Communities at the Urban Edge 1999Once There Were Greenfields: How Urban Sprawl is Undermining America's Environment, Economy, and Social Fabric

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