Proceeding east of I-5 in Springfield (SR 126), Albany (US 20) and Salem (SR 22), the control city mentioned on any I-5 signage relating to those highways should be Bend, which is about 100K for population. ODOT does not do well with designating control cities for highways/freeways coming off of I-5. Little or no mention is made of Astoria, Seaside, Tillamook, Lincoln City, Newport, Coos Bay/North Bend, Coquille, Bandon or any place in Curry County.
This combines with not doing well for signing major out of state cities to make one feel like they are in a bubble when driving in Oregon. WA, CA, ID and NV all let you know more about the Really Important Farther Off Places than Oregon does.
Rick