Outline of Washington (state) infrastructure

The location of the state of Washington in the United States of America
Grand Coulee Dam has long been emblematic of infrastructure in the State of Washington, and is one of two dams mentioned in the official state folk song, Roll On, Columbia, Roll On". But its scale has been eclipsed by several 21st century infrastructure projects.

The following outline is provided as an overview of and topical guide to infrastructure of the U.S. state of Washington.