Highways of Washington State
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Highways of Washington State

On the Web since 1999

This site describes the highway system of Washington State, with emphasis on the history of various route numbers used over time. My email address is markthemapper@gmail.com

Items on my site:

Mapper's Musings (Commentary, Site Updates, etc.) UPDATED July 5, 2021

Interstate Routes US Routes

State Routes 1964-70 to Present

State Highway Numbering System 1937 to 1964-70

State Road Names and Numbers 1923 to 1937


The counter indicates hits on this web site since January 2001. This site was originally created in March 1999 and hosted by HotBot, another Lycos company. This site was moved to Angelfire, a Lycos company, when HotBot discontinued hosting web sites.


My host, Angelfire
Washington State Department of Transportation
E-mail to the WSDOT Cartography/GIS Section