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Interstate 5
Routing
At 276.62 miles in length, Washington's portion of Interstate 5 is the shortest. Interstate 5 in the Evergreen State stretches from Vancouver, part of the Portland metropolitan area, in the south to the U.S.-Canadian border at Blaine in the north. In between, Interstate 5 travels through the roughly 80-mile long urban corridor from Olympia to Everett which is home to nearly two-thirds of the state's population. It is fair to say that the majority of Washington residents live close to this important freeway. Interstate 5 replaced the routing of U.S. 99 in most of the state. Unlike California and Oregon, which each kept large portions of the original U.S. 99 as state routes, only a very small section of the old federal highway was designated as a state route in Washington.
Highway Guides
- Northbound:
- Southbound:
- Whatcom County (Canadian Border and Bellingham)
- Skagit County (Mount Vernon)
- Snohomish County (Everett)
- King County (Seattle)
- Pierce County (Tacoma)
- Thurston County (Olympia)(
- Lewis County and Cowlitz County (Centralia, Chehalis, Longview)
- Clark County (Vancouver)
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