Air quality, noise, climate & energy

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Building, maintaining, and using our transportation infrastructure affects the air quality, noise, and energy use in our communities. In addition, transportation is a significant contributor to greenhouse gas emissions in our state. 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 roadways.

WSDOT builds noise walls to reduce the level of noise from roads when specific criteria are met. Find more information on the noise barrier process and how to reduce traffic noise at your residence on our road noise and noise walls page.

Air quality, greenhouse gases, and energy policies and procedures

Learn how to comply with air quality, greenhouse gas, and energy requirements for your project. To ensure quality analyses, the Washington State Department of Transportation (WSDOT) provides standard practices and helpful tools.

Climate adaptation information for projects is available on our Addressing climate change page.

Noise policies and procedures

Learn how to comply with air quality, noise, and energy regulatory requirements for your project.

Addressing climate change in planning and project documents

Find information on how to evaluate your project for resiliency to the changing climate. .

Noise monitoring & research reports

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.

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