We pulled doubles for about 8 years, mainly across I-40, but quite a few times across there. It’s probably not as bad a stretch as Rock Springs to Cheyenne.
Practice putting on some chains while the weather is nice – and take the advice above, tarp straps to keep them tight. I only ever put a single rail on the drive tires and trudged on.
Sometimes I’d get the wife to push the brake pedal, and I’d go to the last pup and crack open the valve a little, so the trailer set wasn’t getting the full amount of air when brakes were applied, so a light trailer axle wouldn’t grab on slick roads and start to whip around – but I’m not advising you do that.
As said, make sure you’re prepared for survival if you get stuck on the road for wrecks/closures etc.
Ask them if you can take 15 to 84 to 80 when it gets bad – lot easier and safer than climbing/descending that summit.

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