List of Interstate Highways in Washington

List of Interstate Highways in Washington

Infobox road
state=WA
type=Interstate
route=5
highway_name=Interstate Highways in Washington


This is a list of Interstate Highways in Washington, all of which are owned and maintained by the U.S. state of Washington. The Washington State Department of Transportation (WSDOT) is the state agency responsible for the day-to-day maintenance and operations of the Interstate Highways in Washington. The Interstate Highway System in Washington covers convert|771.83|mi|km|1|link=on and consists of three primary routes and six auxiliary routes. The Interstate Highway with the longest segment in Washington is Interstate 90 at convert|296.92|mi|km|1. The shortest Interstate Highway in the state is Interstate 705 at convert|1.50|mi|km|1.Washington State Department of Transportation, [http://srview.wsdot.wa.gov/ State Route Web] ]

The construction of the Interstate Highway System in Washington actually began well before these routes were designated as Interstate Highways. Interstates 5, 90, 82, and 405 were part of Washington's primary and secondary highway system that exisited from 1937 to 1970. Planning is ongoing for a proposed bypass around Seattle called Interstate 605. The route is planned to be a length of convert|40|mi|km|1.

__FORCETOC__

Primary Interstate Highways

References


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