Protecting the environment

We strive to protect the natural environment and your community. Explore what we and our partners do to ensure our transportation system has a minimal impact on both.

The public, agency staff and contractors should use this page to report unplanned releases of materials on or near the highway and WSDOT-operated properties.

Understanding future climate threats is essential for a safe and sustainable transportation system.

Find fish passage projects on this page, get our latest annual fish passage report and view our newest fish passage restoration video.

Dealing with litter is a costly issue on Washington roads. We address it through litter collection programs and the Adopt-a-Highway program. Littering is illegal under Washington state law.

We design, construct and maintain our roadside areas to keep Washington highways safe and beautiful and to reduce maintenance costs.

Learn about how we manage stormwater runoff from paved surfaces like highways, rest areas, park-and-ride lots, ferry terminals and maintenance facilities in urban areas throughout the state.

Find information about noise barriers, our process for determining where to build them and other options to reduce noise at your home.

Find out how we gather information on wildlife collisions and use it to reduce collisions and protect wildlife.

The Regional Road Maintenance Program improves roadway safety while safely maintaining our highways and following the Endangered Species Act.

Find examples of sustainability practices that we do in our work every day.

WSDOT uses tactics such as wildlife fencing, crossings, and median barriers to encourage animals to stay off highways.

14 fish passage projects were completed in 2020

improving access to 54.2 miles of upstream habitat.

11,959 incidents responded to

by WSDOT’s incident Response teams during second quarter of 2021, 15% more than same quarter in 2020.

41 Pre-existing Funds Projects Advertised

during the eighth quarter of the 2019-2021 biennium.