Greenhouse gases

All WSDOT projects must comply with the State Environmental Policy Act (SEPA) and follow agency guidance. Use the webpages linked below to determine what type of analysis and documentation your project requires and for instruction on completing required analyses and documentation.

Determine what type of analyses your project will require

Refer to the Greenhouse Gas Analysis Decision Tree (PDF 128 KB) to determine which types of analyses your project requires. If your WSDOT project needs an analysis, inform the Environmental Documentation and Permit Specialist assigned to your project. 

Learn more about work zone safety

Slow down – lives are on the line.

Drive the posted speeds, they’re there for your safety.

Phone down, eyes up.

Pay attention – both to workers directing you and to surrounding traffic.

Stay calm

Expect delays, leave early or take an alternate route if possible; no appointment is worth risking someone’s life.