The Design Manual provides policies, procedures, and methods for developing and documenting the design of improvements to the transportation network in Washington. It has been developed for state facilities and may not be appropriate for all county roads or city streets that are not state highways. 

July 2017 revision package M 22-01.14  (pdf 15.8 mb)

Individual Chapters / Revision History / Revisions in Progress
Errata Page   / Project Delivery Memos  / Design Bulletin

Chapter 510   Right of Way Considerations (176 kb)
Chapter 520   Access Control (176 kb)
Chapter 530   Limited Access Control (875 kb)
Chapter 540   Managed Access Control (238 kb)
Chapter 550   Interchange Justification Report (364 kb)
Chapter 560   Fencing (259 kb)

Labs for the 21st Century

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