Interstates
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This is the landing page for all known Interstate routes that have existed, currently exist, were planned to exist, or may someday exist in Oregon. These routes were first adopted by AASHO and posted starting in 1956.
- Interstate 5
- Interstate 80N (renumbered to I-84)
- Interstate 82
- Interstate 84
- Interstate 105
- Interstate 205
- Interstate 305 (cancelled)
- Interstate 405
- Interstate 505 (cancelled)
- Mount Hood Freeway
