Planning study guidance

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

Current guidance

Planning Studies Review and Approval Process Memorandum (PDF 285KB)

  • It is highly recommended that all WSDOT planning studies follow the same signature review process detailed in the memo. The M2 Team provides subject matter expert review in a predictable and effective manner.
  • However, Proviso funded studies often have their own rules and regulations as well as specific directions from the Legislature.
  • There are also extra steps to this process if the planning study is a Planning and Environmental Linkages (PEL) study. 

Explore active transportation-related considerations to develop a quality planning study.

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

Use this guidance to incorporate environmental considerations into planning studies.

Use this guidance to incorporate freight consideration in the planning study development.

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

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.

Consideration of safety performance should be a part of the conversation throughout plan development (continuing through programming and design).

Discover how incorporating transportation operations tools into your planning studies will benefit the project through its lifecycle.

166,800 electric vehicle

registrations in Washington in 2023, up from 114,600 in 2022.

87 wetland compensation sites

actively monitored on 918 acres in 2023.

25,000 safe animal crossings

in the Snoqualmie Pass East Project area since 2014.