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Research Reports

Barriers to Implementing Low Impact Development Approaches in Washington State Roadways and Highways

Description: Low impact development (LID) is an approach to stormwater management that seeks to mimic the natural hydrologic functions of stormwater runoff prior to development. In general, LID techniques emphasize infiltration and evaportranspiration to remove pollutants and attenuate flows from urban runoff.

As the largest land developer in Washington State, the Washington
State Department of Transportation (WSDOT) is interested in better understanding the challenges of applying LID techniques to a highway setting and learning ways to address those challenges.

This report identifies barries to implementing LID approaches in a state roadway setting and provides recommendations on how WSDOT can overcome those barriers.

This research question stems from a National Pollutant Discharge Elimination System municipal stormwater permit issued by the Washington State Department of Ecology (Ecology) to WSDOT in February 2009. Barriers were identified through a literature review, Ecology LID advisory committee meeting discussions, and interviews with people who are involved in stormwater management in a varity of capacities throughout Washington State.

  • Date Published: June, 2010
  • Publication Number: WA-RD 756.1
  • Last Modified: September 27, 2010
  • Author: Claire Elisabeth Miccio.
  • Originator: University of Washington. Evans School of Public Affairs
  • # of Pages: 38 p., 1.73 MB (PDF)
  • Subject: Problem identification, Pollution of specific environments, Highways, Runoff, Drainage, Pollution control, Infiltration, Hydrologic cycle, Evapotranspiration, Recommendations.
  • Keywords: Washington State Department of Transportation, WSDOT, low impact development, LID, stormwater, stormwater management.
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This abstract was last modified January 22, 2013