Seattle, WA to Moab, Utah

Looks like you got a lot of advise. We are heading that way this fall depending on the weather. but plan to take 95 to 395 and then across Nevada on Hwy 50.

Utah has spent a lot of money on I-15 thru the SLC area. It is now 6 lanes in places, and the traffic at afternoon rush hour was traveling 70 MPH in the left two lanes, 60-65 in all other lanes.
Left two lanes are truck thru traffic. I run the second lane from the right, at 65 because the highway improvements start at Ogden south.

Getting thru SLC area is not a problem any more.

Well, not always. If there is an accident or construction (and there is always at least some construction, somewhere in the area), traffic can back up to a stop. There is currently construction around Ogden with narrow, uneven lanes, so not exactly a joy to tow through, but it's manageable. Haven't tried the alternate routes, but I think I would concur that, despite the traffic, I-15 is still the way to go thru the SLC area. But definitely avoid rush hour!!!

I second the mention of Village of Trees. Good RV park, convenient to the interstate (there may still be some construction in that area - haven't been in a while), lots of grass, a welcome change from gravel. :)

Tom and Barb, that is useful info about SLC -- we had planned to avoid the area because of the endless construction, but it sounds like that's all done! Great news.

Just made that trip, but I used the most direct route. I recommend traversing I84 from Exit 1 in Idaho to Tremonton in Utah in the morning to avoid severe winds in the PM. If you stay at Village of Trees RV park in Idaho, you are close for a morning departure.

Also, If you are going through Salt Lake City, be aware that there is approximately 100 miles of city traffic from Brigham City to Provo. It is best to avoid rush hours.

Don't forget to stop in Green River, Utah for their outstanding melons of all types.

Watch your fuel gauge!
Great scenery down US 93.
Better choice then the interstates.
Camping area behind the rest area north of Ely. Gravel road to area about 1/4 mile off highway. Non-designated, no hook ups and very quiet.

We are now thinking of taking the US 93 from Twin Falls down to Ely and then US50, the I70 and the US191 down to Moab rather than going to Ogden and SLC and down from there to Moab. Any thoughts on that part of the route?

Thanks.

Second thoughts.
If you don't like traffic and freeways, try crossing at Osoyoos, and use 97 south, to I-82 avoid Seattle altogether.

We spend the first night from Oak Harbor, at a campground on the snake river 1 mile off I-84 at the 201 intersection called "Cat fish Junction" it is a good sam park. That's a long day from Oak Harbor 5 AM to 6-PM.
But is better than trying the Boise / Caldwell traffic at rush hour. when I-84 becomes a parking lot
We do this trip once a year, and just got home in June.

Keep in mind that I-84 south of Pendleton to La-Grand is mostly 6 to 8% up grade, It's a long pull and you'll be coping with very slow trucks.

Jessie2F wrote:
Seems like we will need to use more freeways than I had hoped in order to access RV parks on our trip. This is what we have planned so far:
Day 1: from the U.S. border at Blaine, take I-5, 2, 203 and I-90 to Yakima, WA
Day 2: 82/84 to Caldwell, ID
Day 3: 84 to Ogden, UT
Day 4: 84/80, 189,89,6, and 191 to Moab, UT. We are thinking this route might be easier than taking the 15 straight through SLC. Does that seem reasonable?

Thanks again for any input that is offered.

Utah has spent a lot of money on I-15 thru the SLC area. It is now 6 lanes in places, and the traffic at afternoon rush hour was traveling 70 MPH in the left two lanes, 60-65 in all other lanes.
Left two lanes are truck thru traffic. I run the second lane from the right, at 65 because the highway improvements start at Ogden south.

Getting thru SLC area is not a problem any more.

Using 80/189 to Provo doesn't get you out of traffic, as much as I-15 to Spanish Fork and 6/89 to Moab.
We've done it both ways, and found it easier / quicker on I-15 and a whole lot less nerve racking.

I-90 to Ellensburg, WA is good. At Ellensburg you could take WA 821 down the Yakima River canyon. There is a couple very nice BLM campgounds. No hook ups.
Going to Lewiston area there is state parks and some commercial campgrounds in the area.
US 95 has numerous commercial campgrounds
Sounds like you want to state on the interstates!