GPS Coordinates to Interstate 5 in Portland: 45.5110685, -122.8067801

REGIONS > WESTERN OREGON
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Interstate 5 (also known as I-5) is a major highway beginning at the Canadian border and traveling south to the Mexico border. It runs roughly parallel to the Pacific coast and connects many major cities in Washington, Oregon and California. 

In Oregon, I-5 is the major north-south traffic corridor in the western part of the state. It runs through several of the state's major valleys, including the Willamette Valley, Umpqua River Valley and the Rogue River Valley. 
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Major Oregon Communities Connected by Interstate 5 (from north to south): Portland | Salem | Eugene | Roseburg | Grants Pass | Medford | Ashland

​Although not entering them, I-5 also runs close to Corvallis and Jacksonville.