Went up to Mt Rainier NP a couple of days ago. Besides managing to dodge a lot of road construction in the vicinity (being thankful I wasn't going over White Pass on US 12, as it's undergoing major reconstruction), I snapped a few road-related pics.
First, I finally saw the US 123 sign goofs reported on here, at the access road to Ohanapecosh campground:


Further north, there is another just south of the junction with WA 410:

However, heading north on WA 123 just before this junction, you'll also encounter this sign goof:

US 410 lives again!
Finally, I encountered two signs on WA 706 west of the park with this odd combination of information:

I mean, I see why the narrow shoulders make this an issue, but it seems you should be wary of these hazards regardless. And by the way, the shoulders really weren't that narrow; Washington seems to have higher standards for shoulder width than my state of Oregon does.
Still a lot of snow at Mt Rainier, which made for some interesting hiking. But all in all, a great little day trip.