Air quality, noise & energy

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Building, maintaining, and using our transportation infrastructure affects the air quality, noise, and energy use in our communities. The Washington State Department of Transportation (WSDOT) considers the impacts our projects and programs have on these resources, from noise and air emissions from construction equipment to the traveling public's use of our roadway.

WSDOT builds noise walls to reduce the level of noise from roads under specific circumstances. Read more about these policies and procedures on our road noise and noise walls page.

Learn how to comply with air quality, noise, and energy regulatory requirements for your project.
Mitigating and adapting to climate change is an important part of the Washington State Department of Transportation’s (WSDOT) mission. We are committed to reducing emissions and building and maintaining a resilient transportation system. To these ends, we incorporate climate change considerations into our planning and project evaluations. Find our policies and procedures below, as well as links to reports we have authored and additional references.
To better understand and address the effects of noise on our communities and environment, the Washington State Department of Transportation (WSDOT) participates in a variety of noise research and monitoring efforts including pile driving reports and quieter pavement research .