I'll tell you the route we'd take if we were going thru Oregon this month.
Newport to Lincoln City
Lincoln City to Salem (hwy 20)
Salem to Bend (Hwy 20)
Bend to Ontario and then catch 84
The further north the passes thru the Cascades the more snow ...USUALLY
Best, to figure a further south route just in case)
From Salem, I5 South to Eugene, catch Hwy 58 and go east. Take the Crscent Cutoff road (knocks off 20 miles) and hit Hwy 97.....go north to Bend, then east on 20 to Ontario (If you choose this route, let me know by PM and I'll give you the way to get around Bend without going thru the town -- only works when coming from the south).
SO.....that being said....ALWAYS ALWAY when going from the west side of Oregon to the east side this time of year......check the TripCheck for road conditions. We were surprised yesterday....wearing tshirts on Monday outside....then 5-6" snow the next morning......so even check the morning you leave the coast!!!!
The link is:
LINK