Staff and contractors can find federal, state and local environmental requirements with the guidance and tools to comply with them.

Environmental regulations across a range of disciplines ensure the work of building and maintaining our transportation system does supports our communities and environment. Much of the environmental work we do is organized into the following disciplines. Additional information is also available on our NEPA & SEPA or Permits & approvals pages.

Use the guidance on this page to appropriately disclose potential project impacts through the NEPA and SEPA (National and State Environmental Policy Acts) processes for Washington State Department of Transportation (WSDOT) environmental documents. Documents prepared under Local Programs (LP) should visit the LP Environmental Services webpage.

Use this page to find information on permitting tasks. Permits and approvals help us build and maintain our state highways in a way that minimizes environmental impacts. Federal, tribal, state and local resource agencies authorize work that may impact the environmental resources they manage, like water or protected species, by issuing permits and approvals.

Find our Model Comprehensive Consultation Process during NEPA guidance and other resources to engage tribes during NEPA.

Environmental commitments are developed during project design, by consulting with regulatory agencies and tribes, through the NEPA/SEPA process and during permitting. Follow the procedures on this page to track environmental commitments and to report non-compliance events.

Environmental research and monitoring reports completed by us fulfill permit requirements and document our ongoing efforts to improve the environmental performance of our statewide transportation system.

Find contacts for the Environmental Services Office on this page.

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.