Route 12 from Yakima to Mossyrock, WA

We went over it last year a couple times and the road really needed work, the lane markers were missing for miles and its needs a new coating of asphalt or what ever they use now a days. Saying that, Its the only way to go.

We are no where near as high or long as you, we have a 29' Class C with toad & dolly, but we took US 12 from Yakima to Packwood, and eventually on to I-5, we had no problems at all, very scenic.

All above...... scenery is great. a bonus is that much of the "pass" areas were repaved in the last couple of years, they needed it; very nice now! been over with the 40 footer towing several times. no sweat. Enjoy! TB

RVs and trucks of all sizes, towing and not, take that route every day. It's beautiful and a pleasure to drive. In summer there is often road construction, some with long delays. But in an RV that's not so bad, is it?

White Pass to us was not a big deal. Elevation is only 4500' not at all high. Coming from east to west you'll have a downhill of approximately 6 miles of 6% grade with curves, not hairpins. For a western pass it's not a biggie and it'll be over before you know it. :) It's a beautiful drive and comes past Mt. Rainier Nat'l Park on the backside. If you want to do some touring of the park there will be RV parks/campgrounds on or near Hwy 12. Hwy 12 is a popular highway for RVers.

Stop at a roadside fruit/veggie stand in Yakima as it's a farming community.

Note that there are no passing lanes and the highway is crooked and climbing. You need to be able to maintain speed without impeding following traffic.

obgraham wrote:
RV's of all sizes go over this route every day. It's a mountain pass, but it is fine.

Any road that Semis travel on you can travel with any 5er RV and TV.

I have driven this a lot of times as my grandparentsx lived in Yakima and have driven it in all kinds of weather and everything from an 8' popup to our 40' Tradewinds towing. You'll have a gradual uphill till you get to the lake and then a long stiff uphill to the summit and then downhill to Mayfield lake and then a couple of short uphills. The road is gonna be no problem for your rig. I have even driven it in a 40' school bus in the winter and had to chain up for 22 miles.

A good, well maintained highway that I have driven and towed many times. Very scenic. Pull over at the summit for views of Mt. Rainier.

RV's of all sizes go over this route every day. It's a mountain pass, but it is fine.