ASAP Seattle to Salt Lake City-Routes,weather,experiences?

[BeerSampler]

I was dispatched to Salt Lake City, UT on very short notice. As in tonight (Tuesday) and have to be there Saturday 6AM. I can be mobile and rolling by Thursday night but I am not familiar with the route and area at all especially in December. I am trying to research what I can find on short notice, but all businesses there that may give me advice are closed at this hour.

I perused the route on Google maps ( Federal Way, WA to Salt Lake City, UT Mapand did a couple of searches but could not find anything specific without further research later tonight. I thought I would open the topic here for comments while I continue looking.

My main concern is the weather this time of year (obviously) and what passes there are to worry about. Looking at a basic map, I am familiar with my own Snoqualmie Pass in WA which I could bypass by going all the way south to I-84 in OR then continue East. Then there is between Pendleton, OR and Grant's Pass, OR which looks like Deadman's pass or Cabbage Hill??

From there the unfamiliar eye sees flat open land.

Thoughts? Any timely help from route veterans is going to be extremely valuable and appreciated. I have a special-needs foster dog that I cannot board locally and she has to go with me. If they make me fly because I can't get my act together in time, I will have to decline and deal with the consequences. I will also lose a huge bonus and gain whatever wrath executive management throws around when their holiday wishes are not met.

I am in a 2000 Allegro Bus 37' pusher. If you are wondering what I do, I am a cell tech and travel when skilled work is needed. I made the Southern CA run a few times and loved it.

Thanks

[donn0128]

I90 to I82 to I84 is going to be the fastest and least problematic route. Your biggest chances of worry is going to be Cabbage hill out of Pendelton and the Blue Mountains between Pendelton and LaGrande. Just south of LaGrande there is another spot of touchy road. Check ODOT traffic cams before you head out. I do not think we are expecting any serious storms for the next few days so it should be easy going. But be sure to have chains with you.

[kknowlton]

The passes between Pendleton OR and Boise can be problematic in winter weather. Chains may be required, and caution definitely so.

[Mandalay_Parr]

I would stay on Interstates like Google map shows. Pick up I-90 northeast of you and Interstates all the way. Probably your safest bet.