I use the "Mountain Directory West" (for Truckers, RV, and Motorhome Drivers). It was published in 2006 and listed as costing $16.95 by R&R Publishing, Inc. I think it's the one you have listed and I guess they haven't updated it for whatever reason but I like it a lot!
You may also want to get Rand McNally's Motor Carrier's Road Atlas. It has lists of low clearance bridges and overpasses
