Planning study guidance

Find the guidance and tools to conduct and document a planning study.

Use the guidance on this page to document environmental information, analysis and products during transportation planning for highway corridor and modal facility plans.

Avoid maintenance issues down the road by including this guidance in your planning process.

Consider priority design issues in the planning phase to reduce or redirect efforts during scoping and design.

Use this guidance to clarify your planning study recommendations in a way that WSDOT can support from a priority and programming perspective.

Use this guidance to include public transportation considerations in the process of developing planning studies.

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Improved access to 98.2 miles of upstream fish habitat

through 15 fish passage projects in 2021.

28% increase in the value of exports and imports 

from $90.2 billion in 2020 to $115.5 billion in 2021.