Other notes from my drive to Corvallis-Newport-Lincoln City-McMinnville:
No indication of OR 164 from I-5 on either end of Jefferson.
OR 34 signed as turning into the Corvallis Bypass heading west, not into downtown along ORH 210.
No indication of OR 180 from end of the Eddyville Bypass.
No indication of OR 182 from US 101 near Otter Rock; it was dark and rainy with minimal visibility, but it's likely still unsigned.
OR 153 is unsigned from 18 in Hopewell. No reference to 154 or 155 near Dayton, though neither reach 18.
OR 18 unsigned along OR 99W between Mcminnville Bypass and Newberg-Dundee Bypass. Signed as OR 18 Salmon River Highway along bypass. This makes for a rare ORH concurrency (39 and 92/1W).
No reference to 141 from Tualatin-Sherwood Rd.
These routes will be pulled from the Routes set at some point.