Standard Specifications

• 2012 Standard Specification Book - Effective January 2, 2012,
  Amendments (word 56kb)
• Division 8-21 Permanent Signing
• Division 9-28 Signing Materials and Fabrication

Standard Plans

• Standard Plans
• Section G:  Signs and Sign Supports

Design Manual

• Design Policy - Design Manual (pdf 26mb)
• Design Manual Individual Chapters

Traffic Manual

• Traffic Manual

Manual on Uniform Traffic Control Devices (MUTCD)

• MUTCD
• Washington State Modifications

Sign Fabrication Manual

 Wind Load Charts for Sign Posts

 Wind Load Charts for Sign Posts

• Timber Posts
• Wide Flange "H-Beam" Steel Posts
• Perforated Square Steel Tube Posts
• Laminated Wood Box Posts
• Round Steel Pipe on PL, PL-T, and PL-U Supports