what are the noises/symptoms of bad wheel bearings? anyone have a video?

I still need to get my car aligned and tires rebalanced, but once i get up to about 40 or so, I notice this humming noise that is like going over a metal bridge but quieter. It also varies with different speeds. I hope its not wheel bearings because this seems like a bitch of a job.

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2018 Ram 2500 6.7L Cummins 68RFE
19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed
2013 X5 35D (CEO's) - Born on 5/17/2013 -
82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards