Just finished an overnighter to Ontario/Fruitland and back. Took I-84 out to The Dalles, then clinched the entirety of OR 206 and unsigned OR 206S (and took US 97 up to WA 14). Wasco, Condon, Heppner, and Pilot Rock are far from anything around. Eastern end of 206 overlaps with OR 207; 206 could be truncated a bit and no one would probably notice. Got the eastern end of OR 74, some standalone mileage on US 395 up to Pendleton, figured out what the situation is with OR 37 within Pendleton and clinched the northern fringe of ORH 28.
Took OR 11 up to OR(H) 331, back down to I-84/US 30, and over to La Grande, taking ORH 66 (US 30, OR 203, OR 237, US 30) through La Grande, Union, North Powder, Haines, and Baker.
Took Bus 30 through Huntington, then OR 201 to OR/ID 52. Confirmed that OSM's US 95S in Payette doesn't exist.
Took US 95 north to Weiser, did not feel any wiser, took US 95S back into Oregon, and OR 201 into Ontario.
Grabbed Bus 30 in Ontario, finishing off US 30's auxiliaries in Oregon, and US 30 into Idaho, clinching 30 in Oregon.
Went north on 95 to ID 52 to grab that segment, then south all the way to ID 19 in Hopewell, and ID 19 into Oregon and onto the southern end of OR 201.
Checked out the Parma Spur and the three routes on the only portion of Oregon east of the Snake River... and found out that OR(H) 452 (already unsigned) isn't the route that crosses the snake -- it's unsigned OR 201S/ORH 450. 452 starts at the T junction of OR 201S/453 instead... and just to complicate things, GIS says it's OR 452/ORH 489(!), not OR 201S/ORH 450. Ugh.
Drove back up to Ontario to snag the final unclinched portion of 201, then took US 30 out to New Plymouth, detoured down and back on ID 72, and down to I-84, giving me a continuous clinch of US 30 from Astoria to Bliss.
Returned back to Portland by US 20, clinching it in Oregon, and have it now clinched in three states (OR, ID, MT), US 97, OR(H) 361, and US 26.