County Associations:

• Washington State Association of Counties (WSAC)
• National Association of Counties (NACo)
• National Association of County Engineers (NACE)
• Oregon Association of County Engineers and Surveyors (OACES)
• County Engineers Association of California (CEAC)
• Idaho Association of County Engineers and Road Supervisors(IACERS)
• North Dakota Association of County Engineers (NDACE)
• Arizona Association of County Engineers (AACE)
• Colorado Association of Road Supervisors and Engineers (CARSE)
• Kansas County Highway Association (KCHA)
• Nebraska Association of County Engineers, Highway Superintendents & Surveyors
• Texas Associations of County Engineers and Road Administrators (TACERA)

Washington State:

Federal

Transportation Related

• 
  Transportation Research Board
• 
  American Association of State Highway Transportation Officials
• 
• 
  Transportaton for America
• 
• 
• 
• 
• 
• 
• 
  Better Roada Magazine